Hydrosulfuric acid H2S is a weak acid whose Ka value is 9 5 10 8 chemistry homework help

Hydrosulfuric acid H2S is a weak acid whose Ka value is 9 5 10 8 chemistry homework help

Hydrosulfuric acid, H2S, is a weak acid whose Ka value is 9.5 × 10^-8. What is the pH of a 4.0 M solution of H2S? (Show work)

A. 0.60

B. 6.2

C. 3.5

D. 3.2