Question

1. Sebanyak 100 mL larutan HCl yg mempunyai pH = 1 dicampur dengan 100 mL larutan HCl lain yg mempunyai pH = 2. Hitung pH larutan campuran itu.

tolong pke cara sm dijelasin yah...
thx

Answer 1

HCl1
pH = 1
[H+] = 10^-1
V1 = 100 ml

HCl2
pH = 2
[H+] = 10^-2
V2 = 100 ml
[H+]camp = [H+]1V1 + [H+]2V2 / V1+V2
= 0,1.100+0,01.100 / 100+100
= 0,055
= 5,5 x 10^-2
pH = 2- log 5,5