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Acids and Bases
Terms in this set (54)
Name this compound: H3PO
Write the formula for permanganic acid?
What is the formula for ammonia?
What is the name of H2C204
What is the formula for chromic acid?
What is the formula for phosphoric acid?
What is the name of H2S?
What is the formula of hydroiodic acid?
What is the name of HF?
What volume of of a 1.366M solution of NaOH would be require to titrate 47.22 mL of a 2.075 M solution of H2SO4?
A volume of 20.00 mL of a solution of HNO3 having an unknown concentration is titrated with 34.37 mL of a 0.8220M solution of NaOH. What is the concentration of the HNO3 solution?
What is the pH of a 0.0825 M solution of HBr?
Determine the H3O+ concentration in a solution of pH 8.83.
1.48 x 10 -9 M
What is the concentration of OH- ions in a neutral solution?
[OH-] = 1x10 -7
What does "diprotic" mean?
Refers to an acid that will donate two H+ ions per molecule when dissolved in water.
Give an example of a triprotic acid.
Is the following molecule monoprotic, diprotic, or triprotic: CH3COOH?
Monoprotic, it splits into CH3COO- and H+ (only one hydrogen splits off)
Bases accept H+ and become ___________ acids.
In the following reaction, identify the conjugate acid and base: NH3 + H2O <--> NH4+ + OH-
Conj. Acid - NH4+ Conj. Base - OH-
In the following reaction, identify the acid and the base, using the Bronsted-Lowry definition. H3PO4 + NO2- <--> HNO2 + H2PO4-
Acid - H3PO4, Base - NO2
What is the term for a substance that is considered both an acid and a base according to the Bronsted-Lowry definition?
Name one amphoteric substance.
Write the chemical equation showing the self-ionization of water.
2H2O <--> H3O+ + OH-
Write the equilibrium expression for Kw.
Kw = [H+][OH-] or Kw = [H3O+][OH-]
What is the pOH of a solution with a pH of 4?
10 (pH + pOH = 14)
What formula do you use to find pOH?
pOH = -log[OH-]
If [OH-] = 6.0 x 10 -3 M, what is the concentration of [H3O+]?
1.7 x 10 -12 M
What is the abbreviation for the acid ionization constant?
Write the Ka expression for the following reaction: H2O (l) + CH3COOH (aq) <--> H3O+(aq) + CH3COO- (aq)
Ka = [H3O+][CH3COO-]/[CH3COOH]
What is the pOH of a solution of 3.00 x 10 -5 M HCl?
In a neutralization reaction, an acid and a base react to produce __________?
Water & Salt
H2SO4 + Ba(OH)2 --> ?
H2O + BaSO4
Titration is used to find what?
The concentration of an acid or a base.
What is the point in a titration when the amount of added base exactly equals the amount of acid or base originally in the solution?
If you reach the equivalence point using phenolphthalein indicator, what color will your solution be?
If the pH of your solution is 5.2, what is the [H3O+]?
6.3 x 10 -6 M
In a titration, what do you call the solution with the known concentration?
If a solution has a pH of 2, is it an acid, a base, or neutral?
If a solution has a concentration of 7.4, is it an acid, a base, or neutral?
If a solution has a concentration of 7, is it an acid, a base, or neutral?
A solution with equal concentrations of of OH-, and H3O+ is called __________?
What is the name of H3O+?
Write the Kb (base ionization constant) expression for the following reaction: NH3(g) + H2O(l) <--> NH4+(aq) + OH-(aq)
Kb = [NH4+][OH-]/[NH3]
A substance that can act as either a Bronsted-Lowry acid or base. Water is amphoteric:
H2O + H2O OH- + H3O+ (one H2O loses an H+, the other gains one)
Substance that accepts a proton (H+) in a reaction.
Ex. NH3 + H2O NH4+ + OH- (NH3 is the Bronsted-Lowry base
Substance that donates or loses a proton (H+) in a reaction.
Ex. HCl + H2O Cl- + H3O+ (HCl is the Bronsted-Lowry acid)
Anything that will increase the concentration of OH- (hydroxide) ions in water when dissolved.
Ex. NaOH Na+ + OH-
Anything that will increase the concentration of H+ (and therefore H3O+) ions when dissolved in water.
(3 elements - H and a polyatomic ion)
(2 elements - H and something else)
Solutions that resist change in pH. Is a solution of a weak acid and one of it's salts (or a weak base/salt pair)
Is a process used by chemists to determine the unknown concentration of an acid or base.
The solution in the buret is called the _______
The acid or base is reacted with a corresponding base or acid with a known concentration, called a ____________