In an exactly.200M solution of benzoic acid, a monoprotic acid, the [H+] = 3.55 × 10–3M. What is the Ka for benzoic acid?

1.77 × 10–2
8.88 × 10–2
7.10 × 10–4
6.3 × 10–5

Question

In an exactly.200M solution of benzoic acid, a monoprotic acid, the [H+] = 3.55 × 10–3M. What is the Ka for benzoic acid?

1.77 × 10–2
 8.88 × 10–2
 7.10 × 10–4
 6.3 × 10–5

Eiwoh2 · Answer

i think it is B, but it really dosent matter XD