MHT CET · Chemistry · Solutions
What is the \(\mathrm{pH}\) of \(2 \times 10^{-3} \mathrm{M}\) solution of monoacidic weak base if it ionizes to the extent of \(5 \%\)
- A 10
- B 6
- C 4
- D 14
Answer & Solution
Correct Answer
(C) 4
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & {\left[\mathrm{H}^{+}\right]=\alpha \mathrm{c}} \\ & \mathrm{C}=2 \times 10^{-3} \mathrm{M} \\ & \alpha=0.05 \\ & {\left[\mathrm{H}^{+}\right]=2 \times 10^{-3} \times 0.05} \\ & =1 \times 10^{-4} \mathrm{M} \\ & \mathrm{pH}=4\end{aligned}\)
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