hitung PH dari 0,1 molor larutan HF,KA=10-5

Diket :Molalitas = 0,1 M = 10-¹ M
Ka = 10^-5
Dit : pH larutan HF ?
Jawab :
[H+] := √ Ka . M
= √ 10^-5 .10-¹
= √ 10^-5 . 10-¹
= √ 10^-6 = 10^-3

pH larutan HF : 3