Multiple Choice
What is the calculated pH after adding 2.5 mL of 0.5 M NaOH to 50.0 mL of 0.25 M acetic acid, assuming complete neutralization of the added base?
17. Acid and Base Equilibrium
pH of Weak Acids
Back17. Acid and Base Equilibrium
pH of Weak Acids
- Open Question
Find the percent ionization of a 0.337 m HF solution. the ka for hf is 3.5 × 10-4. What would you expect the percent ionization to be for the same concentration of hydrochloric acid (HCl)? Explain.
- Multiple ChoiceWhat is the pH of a solution that contains 0.200 M HF and 0.200 M HCN, given that the Ka of HF is 3.5 x 10^-4 and the Ka of HCN is 4.9 x 10^-10?
- Multiple ChoiceWhat is the pH of a solution made by mixing 30.00 mL of 0.10 M acetic acid with 30.00 mL of 0.10 M KOH? Assume that the volumes of the solutions are additive. Ka = 1.8 × 10^-5 for CH3CO2H.
- Multiple ChoiceWhat is the pH of a 0.16 M NH4Cl solution, given that the Kb for NH3 is 1.76 × 10⁻⁵?
- Multiple ChoiceWhat is the pH of a mixture of 200 mL of a 0.39 M solution of the weak acid hydronium ion (H₃O⁺) and 250 mL of a 0.62 M solution of hypoiodous acid (HIO, Kₐ = 2.3 × 10⁻¹¹)?
- Multiple ChoiceWhat is the pH of a 0.461 M benzoic acid (C6H5CO2H) solution if the acid dissociation constant (Ka) is 6.5 x 10^-5?
- Multiple ChoiceWhich of the following is the correct pH of a solution formed by mixing 1.3 L of 0.45 M HCl with 5.5 L of 1.95 M HI?
- Multiple ChoiceWhat is the pH of the solution at the halfway point of the titration of acetic acid with sodium hydroxide?
- Multiple Choice
Calculate the [H+] of a 0.50 M solution of methylammonium bromide, CH3NH3Br. The Kb of methylamine, CH3NH2, is given as 4.4 x 10-4.
1views - Multiple ChoiceWhat is the pH of a buffer solution that is 0.185 M in lactic acid and 0.132 M in sodium lactate? The Ka of lactic acid is 1.4 × 10^-4.
- Multiple ChoiceWhat is the percent dissociation of glycine if the solution has a pH of 8.60 and a pKa of 9.60?1views
- Multiple ChoiceWhat is the pH of a 0.10 M solution of H₂SO₃, given that its pKₐ is 1.77 and the change in concentration is small?1views
- Multiple ChoiceCalculate the concentration of the lactate ion in a solution that is 0.100 M in lactic acid (CH₃CH(OH)COOH, pKa = 3.86) and 0.080 M in HCl.