$\mathrm{pH}$ of a $0.01 \mathrm{M}$ solution $\left(K_a=6.6 imes 10^{-4} ight)$

Question

$\mathrm{pH}$ of a $0.01 \mathrm{M}$ solution $\left(K_a=6.6 	imes 10^{-4}ight)$

Aicharya · Accepted Answer

$\begin{aligned} & 	ext { } \alpha=\sqrt{\frac{K_a}{C}}=\sqrt{\frac{6.6 	imes 10^{-4}}{0.01}}=\sqrt{6.6 	imes 10^{-2}}=0.257 \ & {\left[\mathrm{H}^{+}ight]=\mathrm{C} \alpha=0.01 	imes 0.257=2.57 	imes 10^{-3}} \ & \mathrm{pH}=3-\log 2.5=2.60\end{aligned}$

$\mathrm{pH}$ of a $0.01 \mathrm{M}$ solution $\left(K_a=6.6 \times 10^{-4}\right)$

Solution