CHEMISTRY · Multi-part · A Level · Chemistry · Acids and bases · Acids and bases
Problem
Calculate the pH of a solution of given mixtures:
(a) (2g CH3COOH+3g CH3COONa ) in 100 mL of mixture; Ka=1.8×10−5
(b) 5 mL of 0.1 M NH4OH+250 mL of 0.1 M NH4Cl ; Kb=1.8×10−5
(c) (0.25 mole of acid + 0.35 mole of salt) in 500 mL mixture; Ka=3.6×10−4