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.248views
Multiple ChoiceWhat is the pH of a solution of 0.20 M HNO2 containing 0.10 M NaNO2 at 25°C, given the Ka of HNO2 is 4.5 × 10⁻⁴?135views
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?231views
Multiple ChoiceWhat is the pH of the buffer prepared by mixing 200 mL of 0.15 M HNO2 (Ka = 4.0 x 10^-4) and 150 mL of 0.10 M sodium nitrite?236views
Multiple ChoiceWhat is the percent dissociation of glycine if the solution has a pH of 8.60 and a pKa of 9.60?228views
Multiple ChoiceCalculate the pH of a 0.250 M CH3NH3I solution, given that the Kb for CH3NH2 is 4.4 x 10^-4.332views
Multiple ChoiceConsider a 1.0 M solution of a hypothetical weak acid HA whose pKa is 11. Calculate the pH of this solution.259views
Multiple ChoiceAt what pH will alanine exist predominantly in its zwitterionic form, where it is overall uncharged?297views
Multiple ChoiceWhat is the pH of a 0.115 M hydrogen chromate ion (HCrO₄⁻) solution, given that the Ka of HCrO₄⁻ is 3.2 x 10⁻⁷?391views
Multiple ChoiceWhat is the pH of a 0.040 M solution of benzoic acid, given that the acid dissociation constant (Ka) for benzoic acid is 6.3 x 10^-5?302views