1 . larutan HNO2 0,1 M memiliki PH sebesar... a. 1 b. 2 c.3 d. 6 e. 11 2. larutan KOH 0,1 M memiliki PH sebesar ... a. 14 b. 13 c.8 d. 5 e.4

1. [H+] = x × M
= 1 × 0,1M
= 0,1 M = 10^-1 M
pH = - log [H+]
= - log [10^-1]
= 1 (a)

2. [OH-] = x × M
= 1 × 0,1 M
= 0,1 M = 10^-1 M
pOH = - log [OH-]
= - log [10^-1]
= 1
pH = 14 - pOH
= 14 - 1
= 13 (b)