How can we help?

You can also find more resources in our Help Center.

Study sets matching "chemistry equilibrium"

Study sets
Classes
Users

Study sets matching "chemistry equilibrium"

41 terms
Chemistry Kinetics and Equilibrium
Kinetics
Collision Theory
Factors affecting rate of reaction
Nature of reactants
study of the rate (speed) at which reactions occur
In order for a reaction to occur, reactant particles must col…
Nature of reactants, concentration, pressure, temp, surface a…
Ionic substances react faster, covalent substances react slower
Kinetics
study of the rate (speed) at which reactions occur
Collision Theory
In order for a reaction to occur, reactant particles must col…
14 terms
Chemistry Equilibrium
Equilibrium
Dynamic Equilibrium
Types of Equilibrium
Solution Equilibrium
-2 different things occurring at equal rates... -results in cons…
-
-solution equilibruim... -Phase equilibrium... -Chemical equilibrium
-saturated solution... Rate of dissolving=rate of precipitation
Equilibrium
-2 different things occurring at equal rates... -results in cons…
Dynamic Equilibrium
-
26 terms
Chemistry Equilibrium
Rate of reaction
Collision Theory
Factors that influence rate of reactio…
Factors that influence rate of reactio…
amount of reactants which appear/disappear of the amount of p…
+ molecules must collide with each other for a reaction to oc…
CONCENTRATION - increase concentration > increase number of c…
TEMPERATURE - increase temperature (particles move faster) >…
Rate of reaction
amount of reactants which appear/disappear of the amount of p…
Collision Theory
+ molecules must collide with each other for a reaction to oc…
19 terms
Chemistry: Equilibrium
Activation Energy
Transition State
Activated Complex
Potential Energy Diagram
the difference between the starting energy of the reactants a…
the brief moment in which reactants are in the process of tur…
the temporary, unstable substance that forms during the trans…
shows how the energy stored in the bonds of reactants and pro…
Activation Energy
the difference between the starting energy of the reactants a…
Transition State
the brief moment in which reactants are in the process of tur…
10 terms
Chemistry: Equilibrium: Equilibrium Constants
law of mass action/equilibrium constan…
things which do not show up in the equ…
the product of the equilibrium constan…
the inverse of the equilibrium constan…
The ratio of the product concentrations, raised to their stoi…
liquids and solids
what the equilibrium constant for a multi-step process is equ…
what the equilibrium constant for a reverse reaction is equal…
law of mass action/equilibrium constan…
The ratio of the product concentrations, raised to their stoi…
things which do not show up in the equ…
liquids and solids
26 terms
AP Chemistry: Equilibrium
Activation Energy
Transition State
Activated Complex
Potential Energy Diagram
the difference between the starting energy of the reactants a…
the brief moment in which reactants are in the process of tur…
the temporary, unstable substance that forms during the trans…
shows how the energy stored in the bonds of reactants and pro…
Activation Energy
the difference between the starting energy of the reactants a…
Transition State
the brief moment in which reactants are in the process of tur…
22 terms
PDST Chemistry - Equilibrium
Chemical equilibrium
Le Chȃtelier's Principle
Law of Chemical Equilibrium
Reversible reaction
A state of dynamic balance where the rate of forward reaction…
If a stress is applied to a system at equilibrium, the system…
For the reaction aA + bB ⇋ cC + dD
A reaction that can go in the forward or reverse directions
Chemical equilibrium
A state of dynamic balance where the rate of forward reaction…
Le Chȃtelier's Principle
If a stress is applied to a system at equilibrium, the system…
13 terms
Chemistry: Equilibrium
chemical equilibrium
Le Chatelier's Principle
away
towards
the point at which the rate of the forward reaction is equal…
theory that if you disturb an equilibrium, it will shift to u…
adding a reactant or product shifts the equilibrium ________…
removing a reactant or product shifts the equilibrium _______…
chemical equilibrium
the point at which the rate of the forward reaction is equal…
Le Chatelier's Principle
theory that if you disturb an equilibrium, it will shift to u…
25 terms
Equilibrium(chemistry)
this type of reaction occurs only in o…
this type of reaction occurs in two di…
forward reaction
reverse reaction
completion reaction
reversible reaction
reactants converted to products
products converted into reactants
this type of reaction occurs only in o…
completion reaction
this type of reaction occurs in two di…
reversible reaction
19 terms
Chemistry Equilibrium
Reversible Reactions
Dynamic Equilibrium
Phase Equilibrium
Solution Equilibrium
A reaction that can proceed both directions
When the rate of the forward reaction is equal to the rate of…
When a phase change is occuring
Examples include solids in liquids, gases in liquids... -Satura…
Reversible Reactions
A reaction that can proceed both directions
Dynamic Equilibrium
When the rate of the forward reaction is equal to the rate of…
11 terms
Chemistry: Equilibrium
Chemical Equilibrium
Dynamic Equilibrium
Haber Process
Law of Mass Action
The state where the concentrations of all reactants and produ…
When the rate of the forward reaction equals the rate of the…
...
, and represented by the equilibrium expression
Chemical Equilibrium
The state where the concentrations of all reactants and produ…
Dynamic Equilibrium
When the rate of the forward reaction equals the rate of the…
14 terms
Regents Chemistry Kinetics and Equilibrium
Kinetics
Catalyst
Entropy
Le Chatelier's Principal
a branch of chemistry that is concerned with the rates of che…
substance that speeds up the rate of a chemical reaction by l…
The measure of the randomness or disorder in a system.
A responds to relieve any stress on the equilibrium system.
Kinetics
a branch of chemistry that is concerned with the rates of che…
Catalyst
substance that speeds up the rate of a chemical reaction by l…
9 terms
Chemistry: Equilibrium
reversible reactions
dynamic equilibrium
static equilibrium
entropy
can proceed towards making products or reactants... don't procee…
forward and reverse reaction rates are still going, but at th…
forward and reverse rates have stopped
measure of distribution of energy... equilibrium when max. entro…
reversible reactions
can proceed towards making products or reactants... don't procee…
dynamic equilibrium
forward and reverse reaction rates are still going, but at th…
8 terms
Chemistry Equilibrium
Equilibrium
general equilibrium equation
ICE
K comparisons
when the rate of the forward reaction equals the rate of the…
K = (C^cD^d)/(A^aB^b)... Products over reactants.... Only aqueous…
Initial, change, equilibrium
if K>>1, the reaction lies to the right. If K<<1, the reactio…
Equilibrium
when the rate of the forward reaction equals the rate of the…
general equilibrium equation
K = (C^cD^d)/(A^aB^b)... Products over reactants.... Only aqueous…
28 terms
Equilibrium- Chemistry
Collision Model
Activation energy
Catalyst
Enzyme
A model based on the idea that molecules must collide to react
The minimum quantity of energy to start a reaction
A substance that speeds up a reaction without being consumed
A large molecule, usually a protein, that catalyzes biologica…
Collision Model
A model based on the idea that molecules must collide to react
Activation energy
The minimum quantity of energy to start a reaction
17 terms
Chemistry Equilibrium
pressure increase
pressure decrease
reactant concentration increase
reactant concentration decrease
shift towards fewest moles
shift towards most moles
shift right to make more products
shift left to make more reactants
pressure increase
shift towards fewest moles
pressure decrease
shift towards most moles
8 terms
Chemistry: Equilibrium
Dynamic equilibrium
Reaction quotient
Magnitude of equilibrium constant
Le Chatelier's principle
Forward reaction and reverse reaction occur at an equal const…
Concentrations of products divided by concentrations of react…
When the reaction goes nearly to completion K >> 1.... If the re…
States that if a system at equilibrium is subjected to a smal…
Dynamic equilibrium
Forward reaction and reverse reaction occur at an equal const…
Reaction quotient
Concentrations of products divided by concentrations of react…
30 terms
Chemistry - Equilibrium
Kc and Kp always have the same values…
Kc and Kp are unaffected by a _ and _
Kc =
If the value of Kc is large then...
Temperature
Catalyst, changes in concentration
[C]^c[D]^d/[A]^a[B]^b
Equilibrium lies to the right (the products concentration is…
Kc and Kp always have the same values…
Temperature
Kc and Kp are unaffected by a _ and _
Catalyst, changes in concentration
5 terms
Equilibrium(Chemistry)
Dynamic equilibrium
Solution equilibrium
Vapour equilibrium
Chemical equilibrium
Observed when opposing forces are occurring at the same time…
When the number if particles dissolving is equal to the numbe…
When the number of molecules vaporizing is equal to the umber…
Occurs when the rate of formation of the products is equal to…
Dynamic equilibrium
Observed when opposing forces are occurring at the same time…
Solution equilibrium
When the number if particles dissolving is equal to the numbe…
27 terms
Chemistry: Equilibrium
What is the Le Chatelier Principle?
What are the two types of equilibrium?
What is Dynamic Equilibrium?
What is a Closed System?
When you exert a change on a system in equilibrium, it moves…
Static equilibrium and dynamic equilibrium
When the rate of the forwards reaction is equal to the rate o…
No matter can be moved in or out of the system, only energy
What is the Le Chatelier Principle?
When you exert a change on a system in equilibrium, it moves…
What are the two types of equilibrium?
Static equilibrium and dynamic equilibrium
24 terms
Chemistry (Equilibrium)
Collision Model
Activation Energy
Exothermic Process
Endothermic Process
-Have enough energy to produce reaction (Must equal or exceed…
Minimum energy required to transform reactants into activated…
Process in which energy is released as it proceeds and surrou…
Energy is absorbed as it proceeds and surrounds becomes colde…
Collision Model
-Have enough energy to produce reaction (Must equal or exceed…
Activation Energy
Minimum energy required to transform reactants into activated…
46 terms
Chemistry Equilibrium
Equilibrium
Where can equilibrium only occur?
Are the quantities of reactants and pr…
When does equilibrium occur
When forward and reverse reactions happen at the same time
In a system where reactants and products do not leave the sys…
No
During physical processes such as change of state or dissolving
Equilibrium
When forward and reverse reactions happen at the same time
Where can equilibrium only occur?
In a system where reactants and products do not leave the sys…
23 terms
Chemistry: Equilibrium
The Equilibrium Constant (Kc)
The Reaction Quotient (Q)
If the value of Kc is very small...
If the value of Kc is very large...
Has a fixed value for a particular reaction at a specified te…
A measure of the relative amount of products and reactants pr…
The equilibrium lies to the left in favour of reactants
The equilibrium lies to the right in favour of products
The Equilibrium Constant (Kc)
Has a fixed value for a particular reaction at a specified te…
The Reaction Quotient (Q)
A measure of the relative amount of products and reactants pr…
37 terms
Chemistry (Equilibrium)
equilibrium
dynamic equilibrium
constant
temperature
rate of the forward reaction is equal to the rate of the reve…
reaction is proceeding in the forward and in the reverse dire…
At equilibrium, the concentrations of all reactants and produ…
Equilibrium is ____________ dependent.
equilibrium
rate of the forward reaction is equal to the rate of the reve…
dynamic equilibrium
reaction is proceeding in the forward and in the reverse dire…
9 terms
Chemistry Equilibrium
Kc =
Kp =
PA =
R:
[D]^d*[E]^e... [A]^a*[B]^b
(PD)^d*(PE)^e... (PA)^a*(PB)^b
[A]*R*T
.0821 L*atm/K*mol
Kc =
[D]^d*[E]^e... [A]^a*[B]^b
Kp =
(PD)^d*(PE)^e... (PA)^a*(PB)^b
32 terms
Chemistry equilibrium
state of eqium
position of eqium
state of eqium reached
eqium law
when the rates of forward and backward reaction are equal.
can be controlled by changing the conditions
in a closed system when the rates of reverse and forward reac…
describes how the eq constant (Kc) can be determined.
state of eqium
when the rates of forward and backward reaction are equal.
position of eqium
can be controlled by changing the conditions
Chemistry: Equilibrium
Dynamic equilibrium
As reaction proceeds, concentration of…
Equilibrium expression
What species are left out of the equil…
Rate of forward reaction & rate of reverse reaction remain un…
Decrease, increase
Keq = [product] / [reactant]
Pure liquids & solids
Dynamic equilibrium
Rate of forward reaction & rate of reverse reaction remain un…
As reaction proceeds, concentration of…
Decrease, increase
Chemistry Equilibrium
What happens when Kc is large? (larger…
What happens when Kc is small? (less t…
Kc
Qc
Forward
Reverse
equilibrium constant
reaction quotient
What happens when Kc is large? (larger…
Forward
What happens when Kc is small? (less t…
Reverse
10 terms
Chemistry - Equilibrium
Le Chatelier's Principle:
Kc=
Does concentration affect the position…
Does pressure affect the position of e…
If there's a change in concentration, pressure or temperature…
products^(number of moles) / reactants^(number of moles)
yes
yes
Le Chatelier's Principle:
If there's a change in concentration, pressure or temperature…
Kc=
products^(number of moles) / reactants^(number of moles)
13 terms
Chemistry - Equilibrium
What is a reversible reaction?
What symbol is used to show reversible…
Give an example of a reversible reacti…
What is Dynamic Equilibrium?
This is when the products of reaction can react with each oth…
Two half arrows on top of each other going in different direc…
Thermal decomposition of ammonium chloride. When heated it br…
This is when a reversible reaction takes place in a closed sy…
What is a reversible reaction?
This is when the products of reaction can react with each oth…
What symbol is used to show reversible…
Two half arrows on top of each other going in different direc…
50 terms
Chemistry Kinetics and Equilibrium
Kinetics
Reaction
Rate determining step
Collision Theory
study of the rate or speed at which reactions occur
the breaking and reforming of bonds to make new compounds or…
the slowest step of the reaction
In order for a reaction to occur, reactant particles must col…
Kinetics
study of the rate or speed at which reactions occur
Reaction
the breaking and reforming of bonds to make new compounds or…
35 terms
Chemistry - Equilibrium
what is a reversible reaction?
what is thermal decomposition?
what is an exothermic reaction?
what is an endothermic reaction?
a reaction that can proceed in any direction
breaking down using heat
a reaction that releases heat energy into the environment
a reaction that takes in heat energy from the environment
what is a reversible reaction?
a reaction that can proceed in any direction
what is thermal decomposition?
breaking down using heat
21 terms
Chemistry- Equilibrium
What are Two Features of a Dynamic Equ…
What Does Le Chateliers Principle State
What is Kc
What Does alcohols Only Apply For
It is in a closed system, and the rate of the forward reactio…
That when a system in dynamic equilibrium is subjected to a c…
This is the equilibrium constant at a certain temperature.
Equilibria (when there are equilibrium concentrations), and o…
What are Two Features of a Dynamic Equ…
It is in a closed system, and the rate of the forward reactio…
What Does Le Chateliers Principle State
That when a system in dynamic equilibrium is subjected to a c…
15 terms
Chemistry - Equilibrium
What would happen if you incresed the…
What would happen if you increased the…
What would happen if you increased the…
What would happen if a catalyst was ad…
The reaction tries to remove the increased temperature, there…
The reaction tries to decrease the pressure, and so the equil…
The reaction will try to cool the temperature back down. This…
Nothing would change except the rate of reaction would be spe…
What would happen if you incresed the…
The reaction tries to remove the increased temperature, there…
What would happen if you increased the…
The reaction tries to decrease the pressure, and so the equil…
18 terms
General Chemistry 6: Equilibrium
Reversible reaction
Dynamic equilibrium
Law of Mass Action
Equilibrium, Entropy and Gibb's free e…
Reversible reactions usually do not proceed to completion bec…
Chemical equilibria are dynamic in that the reactions are sti…
states that, if a system is at equilibrium at a constant temp…
At equilibrium, the rate of the forward reactions equals the…
Reversible reaction
Reversible reactions usually do not proceed to completion bec…
Dynamic equilibrium
Chemical equilibria are dynamic in that the reactions are sti…
8 terms
Equilibrium chemistry
Keq > 1
Keq < 1
Keq = 1
Pressure increase
Products favored
Reactants favored
Neither favored
Direction with least number of moles of gas
Keq > 1
Products favored
Keq < 1
Reactants favored
10 terms
Chemistry - Equilibrium
dynamic equilibrium
position of equilibrium
Change: add reactants
Change: add products
RATES of forward and reverse reactions are equal ... observable…
this number determines whether there are more products or rea…
shift to right (more products are made)
Shift to left (more reactants are made)
dynamic equilibrium
RATES of forward and reverse reactions are equal ... observable…
position of equilibrium
this number determines whether there are more products or rea…
11 terms
Chemistry - Equilibrium +
Undestanding Dynamic Equilibria notes…
Equilibrium Constant
Understanding Dynamic Equilibria (cont).
BIG IDEA - EQUILIBRIUM
From "slow steps", you can have the rate laws. For example, r…
notated by "K". Equilibrium constant = [products]/[reactants]…
A -> B... - 1:1 ratio... - rate(for) = k1[A]'... - rate(rev) = k-1[B]'…
Its not about getting the same value for both the reactants a…
Undestanding Dynamic Equilibria notes…
From "slow steps", you can have the rate laws. For example, r…
Equilibrium Constant
notated by "K". Equilibrium constant = [products]/[reactants]…
12 terms
Chemistry equilibrium
Increase in reactant
Decrease in reactant
Increase in product
Decrease in products
Shift to the right
Shift to the left
Shift to the left
Shift to the right
Increase in reactant
Shift to the right
Decrease in reactant
Shift to the left
Chemistry- Equilibrium
Chemical equilbrium
Equilibrium-constant expression
Equilibrium constant-Kc
Law of Mass Action
state reached by a reaction mixture when the rates of the for…
expression multiplying concentrations
value obtained for the equilibrium- constant expression when…
aA + bB --> dD + eE
Chemical equilbrium
state reached by a reaction mixture when the rates of the for…
Equilibrium-constant expression
expression multiplying concentrations
19 terms
Chemistry-Equilibrium
reversible reaction
<->
equilibrium
closed system
a reaction in which the conversion of reactants to products a…
symbol for reversible reaction
no net change occurs in the actual amounts of the components…
finite amounts
reversible reaction
a reaction in which the conversion of reactants to products a…
<->
symbol for reversible reaction
25 terms
Chemistry Equilibrium
Rate of Development
3 things you need for a reaction
Reaction goes faster w __________ conc…
Equilibrium
rate of reaction rely on concentration and temp
- collisions need for energy to start... - High kinetic energy... -…
high- bc more collisions
forward reaction rate equals the backwards reaction rate
Rate of Development
rate of reaction rely on concentration and temp
3 things you need for a reaction
- collisions need for energy to start... - High kinetic energy... -…
42 terms
Ap Chemistry Equilibrium
Equilibrium constant
K>1
Forward reaction
Reverse reaction
k=products-reactants
Forward reaction is favored
Reactants to Products
Products to reactants
Equilibrium constant
k=products-reactants
K>1
Forward reaction is favored
10 terms
Chemistry Equilibrium
Equilibrium position
Law of chemical equilibrium
Reaction quotient
Law of mass action
Depends on the initial concentrations of the substances in a…
States that every reaction proceeds to an equilibrium state w…
Used to determine if a reaction has reached equilibrium
Expresses the relative concentration of reactants and product…
Equilibrium position
Depends on the initial concentrations of the substances in a…
Law of chemical equilibrium
States that every reaction proceeds to an equilibrium state w…
15 terms
chemistry equilibrium
activated complex
equilibrium reactions
at equilibrium
soda
- a set of particles that exist for a very short period of ti…
reversible reactions ... reactants <=> products... - reverse produc…
- must be in a closed system... - the rate of forward must be eq…
H2CO3<=> H2O + CO2... - closed: CO2 produced, stored/cannot esca…
activated complex
- a set of particles that exist for a very short period of ti…
equilibrium reactions
reversible reactions ... reactants <=> products... - reverse produc…
16 terms
Equilibrium, Chemistry
If Keq is bigger than one, the________…
If Keq is smaller than one, the ______…
If Keq=Q
If Keq is greater than Q, the reaction…
products
reactants
The reaction is at equilibrium
right, towards products
If Keq is bigger than one, the________…
products
If Keq is smaller than one, the ______…
reactants
10 terms
Chemistry Equilibrium
concentration: add reactants
concentration: remove reactants
temperature: exothermic add heat
temperature: exothermic remove heat
makes more products
makes more reactants
shifts left
shifts right
concentration: add reactants
makes more products
concentration: remove reactants
makes more reactants
Chemistry Equilibrium
Le Chatelier Principle
Stress
Right
Left
If a reaction is in equilibrium and a change of conditions ta…
Changes in conditions
If the reaction makes more products to overcome the stress, t…
If the reaction makes more reactants to overcome the stress,…
Le Chatelier Principle
If a reaction is in equilibrium and a change of conditions ta…
Stress
Changes in conditions
23 terms
Chemistry Equilibrium
K at 30 degrees Celsius is greater tha…
Decreased volume only disrupts equilib…
If K > 1, formation of _____ is favored.
If K < 1, formation of _____ is favored.
True
unequal
products
reactants
K at 30 degrees Celsius is greater tha…
True
Decreased volume only disrupts equilib…
unequal
13 terms
Chemistry - Chemical Equilibrium
Chemical Equilibrium
General Equilibrium equation
Reversible reactions
Equilibrium Equation
A state in which the rates of forward and reverse reactions a…
aA + bB = cC + dD... A, B are reactants... C, D are products... a, b,…
Reactions that can go in either direction, from products to r…
K eq = equlibrium constant (unitless)... K eq = Products/Reactan…
Chemical Equilibrium
A state in which the rates of forward and reverse reactions a…
General Equilibrium equation
aA + bB = cC + dD... A, B are reactants... C, D are products... a, b,…
1 of 10