Which one of the following statements is not true?

Options

A. the conjugate base of `H_(2)PO_(4)^(-)` is `HPO_(4)^(2-)`
B. `pH+pOH=14` for all aqueous solutions at `25^(@)C`.
C. The `pH` of `1xx10^(-8)M HCl` is `8`.
D. `96,500` coulombs of electrcity when passed through a `CuSO_(4)` solution deposities `1` gram equivalent of copper at the cathode.

Explanation

We know that for a acids at `25^(@)C` pH must be less than `7`.