Đáp án:
pH = 1
Giải thích các bước giải:
$\begin{gathered} {H_2}S{O_4} \to 2{H^ + } + SO_4^{2 - } \hfill \\ \,\,\,\,\,\,\,\,\,\,\,0,05\,\,\,\, \to \,\,\,\,\,\,\,\,\,0,1\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,M \hfill \\ \to pH = - \log [{H^ + }{\text{]}} = - \log 0,1 = 1 \hfill \\ \end{gathered} $
