AP EAMCET · Chemistry · Hydrogen
The pH of a solution of \(\mathrm{H}_2 \mathrm{O}_2\) is 6.0. Some chlorine gas is bubbled into this solution. Which of the following is correct?
- A The \(\mathrm{pH}\) of resultant solution becomes 8.0
- B Hydrogen gas is liberated from resultant solution
- C The pH of resultant solution becomes less than 6.0 and oxygen gas is liberated
- D \(\mathrm{Cl}_2 \mathrm{O}\) is formed in the resultant solution
Answer & Solution
Correct Answer
(C) The pH of resultant solution becomes less than 6.0 and oxygen gas is liberated
Step-by-step Solution
Detailed explanation
\(\mathrm{H}_2 \mathrm{O}_2+\mathrm{Cl}_2 \longrightarrow 2 \mathrm{HCl}+\mathrm{O}_2\) \(\mathrm{HCl}\) is formed by the reduction of chlorine by \(\mathrm{H}_2 \mathrm{O}_2\), hence \(\mathrm{pH}\) further decreases.
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