$x = \sqrt {\frac{{{{10}^{ - 14}}}}{{1.3 \times {{10}^{ - 9}} \times 0.01}}} = 2.772 \times {10^{ - 2}}$
$\% = 2.77 \times 10^{-2} \times 100 = 2.77\%$
$K_a = 1.3 \times 10^{-9}$
$pK_a = 8.8$
$pH = 7 + \frac{1}{2}p{K_a} + \frac{1}{2}\log C\,\,\,\, \Rightarrow \,\,\,\,pH = 7 + \frac{1}{2} \times 8.8 + \frac{1}{2}\log {10^{ - 2}} = \,\,7 + 4.4 - 1.00 = 10.4$
$\begin{array}{*{20}{c}}
{C{H_3}C{H_2}OH{\text{ }} + {\text{ }}{H_3}{O^ + }\, \to \,C{H_3}C{H_2} - {O^ + } - H\, + {H_2}O} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,H\,\,\,\,\,\,}
\end{array}$