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Chemical equilibrium Sarah g.
Terms in this set (25)
When a reaction results in almost complete conversion of reactants to products, chemists say the reaction goes to...
A reaction that can occur in both forward and the reverse direction is called a(n)...
... Is a state in which the forward and reverse reactions balance each other because they take place at equal rates
At equilibrium, the concentrations of reactants and products are... But that doesn't mean that the amounts or concentrations are...
Equilibrium is a state of...not one of...
True or false: the law of chemical equilibrium states that at a given pressure, a chemical system may reach a state in which a particular ratio of reactant to product concentration has a constant value
True or false: the equation
H2+I2<--->2HI is an example of a homogeneous equilibrium (all are gases)
True or false: If an equilibrium constant has a value less than one, the reactants are favored at equilibrium.
True or false: the value of Keq is constant only at a specific volume.
True or false: if the Keq for a reaction at 300 K is 49.7, the concentration of the reactants will be greater than the concentration of the products
True or false: a heterogeneous equilibrium means that reactants and products are present in more than one state
True or false: the product of the forward chemical reaction is HI, for the equilibrium expression:[HI]2
Products are favored
Reactants are favored
Add reactant or remove a product
Shift to the right
Add product or remove a reactant
Shift to the left
Volume decrease/ pressure increase
Shift to the side with the lowest amount of molecules
Volume increase/ pressure decrease
Shift to the side with the highest number of molecules
A ...speeds up a reaction by lowering the energy needed for the reaction, but it does so equally in both the forward and reverse reactions
What does Le tellers principle say?
If a stress is applied to a system at equilibrium, the system shifts in the direction that relieves the stress.
What are three kinds of stresses that can be placed on a system?
^concentration ^temperature ^volume
Qsp is greater than Ksp
A precipitate is formed
Qsp is equal to Ksp
No changes occur
Qsp is less than Ksp
No precipitate is full
What is the solubility product constant?
The equilibrium constant expression for the dissolving of a sparingly soluble compound.
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