Acids and Bases Quiz

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What is the strongest monoprotic acid of the following set if all the acids are at 0.100 M concentration?

The strongest monoprotic acid in the given set is hydrofluoric acid (HF) with a Ka of 3.5 x 10^-4.

Which would form the least acidic solution?

CH4 would form the least acidic solution.

AgC has the lowest solubility in which of the following?

AgC has the lowest solubility in H2O (water).

Which one of the following combinations cannot function as a buffer solution?

HCl and NaCl cannot function as a buffer solution. Signup and view all the answers

What is the most soluble salt of the following set?

PbCl2 (lead(II) chloride) with a Ksp of 1.2 x 10^-5 is the most soluble salt in the given set. Signup and view all the answers

Is HCN a strong or weak acid?

HCN (hydrocyanic acid) is a weak acid. Signup and view all the answers

What is the characteristic pH-titrant curve for the titration of a strong acid by a strong base?

The characteristic pH-titrant curve for the titration of a strong acid by a strong base is a sigmoidal curve with a sharp pH change around the equivalence point. Signup and view all the answers

Calculate the pH and percentage ionization of 0.10 M CH3COOH given that Ka for acetic acid is equal to 1.8 x 10^-5.

The pH of 0.10 M CH3COOH (acetic acid) is 2.74, and the percentage ionization is 4.2%. Signup and view all the answers

What is the pH of a 0.0020 M HCl solution?

C) 3.70 Signup and view all the answers

What is the conjugate acid of HPO4^2-?

E) H2PO4^- Signup and view all the answers

An aqueous solution of NH4Cl will be:

B) acidic Signup and view all the answers

In the following chemical equation indicate the reactant that is a Bronsted-Lowry acid: HNO2(ag) + H20(l) = H3O+(aq) + NO2- (aq)

A) HNO2 Signup and view all the answers

BF3 and NH3 undergo a Lewis acid-base reaction forming an adduct.Which picture below correctly represents the curved arrow notation for the initial Lewis acid-Lewis base interaction in this reaction; what is the Lewis acid and the Lewis base?

The correct picture would show a curved arrow pointing from the lone pair on the nitrogen of NH3 to the boron atom of BF3. BF3 is the Lewis acid and NH3 is the Lewis base in this reaction. Signup and view all the answers

What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M CH3CO2H with 25.00 mL of 0.050 M CH3CO2Na?Assume that the volume of the solutions are additive and that Ka = 1.8 × 10^-5 for CH3CO2H.

C) 4.74 Signup and view all the answers

What is the equilibrium constant expression for the Ksp of Mg3(PO4)2?

Ksp = [Mg^2+]^3 * [PO4^3-]^2 Signup and view all the answers

Order the following species in terms of increasing base strength: Br, Cl, F, I

The order of increasing base strength is: F < Cl Signup and view all the answers

The OH concentration in a 2.5 x 10^-3 M Ba(OH)2 solution is:

B) 7.5 × 10^-3 M Signup and view all the answers

Which indicator, methyl orange or phenolphthalein, would work for the following titration?

Methyl orange would be the appropriate indicator for this titration, as it changes color around pH 4, which is in the acidic range where the titration of a strong acid (HCl) with a strong base (NaOH) would occur. Signup and view all the answers

Acids and Bases Quiz

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