Question

If we have a concentration of H+ at 1 x 10-1.2 mol/L, what is the pH value?

A. -1.2
B. 0
C. 2.4
D. 1.2

A.

Answer 1

(H^+) = 10^-pH

so pH = 1.2 (D)

or

10^-1.2 = 0.0631 = (H^+)
pH = -log(H^+)
pH = -log(0.0631)
pH = -(-1.2) = 1.2