Question

What will be the new pH if 0.01 mol of NaOH is added to a 1 L buffer solution that is 0.1 M in acetic acid (CH₃COOH) and 0.1 M in sodium acetate (CH₃COONa)?Dissociation constant Ka of acetic acid at 25∘C is 1.8 ×10⁻⁵
A) 5.52
B) 4.92
C) 4.1
D) 6.13