Question

Determine the pH. Are these solutions acidic or basic?

a. [H3O+]=1.0*10^-8 a. pH=acidic or basic?

b.[OH-]=1.0*10^-9 b. pH=acidic or basic?

c.pOH=1.4 c. ph= acidic or basic?

d.pOH=7.8 d. pH=acidic or basic?

Answer 1

See your post above. The same rules apply here but you are asked to calculate pH. For that, pH = -log(H^+).