जल में HCl का $ P^H of 10 ^ {-8 }$ M विलयन है
$ P^H of HCl should be less than 7. due to self ionisation of H_2O $ अम्ल से $ [H ^+] = 10 ^ {-8} M from H_2O [H ^+] = 10^{-7 } M $ $ Total [H ^+] = 10 ^ {-8} + 10^{-7} = 10 ^{-8 } (1 + 10) = 11 \times 10 ^ {-8} M $ $ P^H = - log [H^+] = - log(11 \times 10^{-8}) = - (1.0414 - 8) = 6.96 $ $P ^H =6.96 $