Calculate the pH of a 1.0 × 10^-6 M solution of HI. Round your answer to 2 decimal places.

Answer 1

The equation for the dissociation of HI is:

HI → H+ + I-

Since 1 molecule of HI dissociates into 1 H+ ion and 1 I- ion, the concentration of H+ ions is equal to the concentration of HI, which is 1.0 × 10^-6 M.

Therefore, pH = -log[H+]
pH = -log(1.0 × 10^-6)
pH = -(-6)
pH = 6.00

So, the pH of a 1.0 × 10^-6 M solution of HI is 6.00.