How do you calculate theoretical calculated pH.

Question

1. 0.1 M HCL pH: 1
2. 0.1 M NaOH pH: 13

Answer 1

1. pH = -log(HCl) = -log 0.1 = 1
2. pOH = -log(NaOH) = -log(0.1) = 1
The pOH + pH = 14; pH = 14-pOH = 14-1 = 13