KCET · Chemistry · Redox Reactions
Which of the following statement is correct?
- A \( \mathrm{F}_{2} \) oxidises \( \mathrm{H}_{2} \mathrm{O} \) to \( \mathrm{O}_{2} \) but \( \mathrm{Cl}_{2} \) does not
- B Fluoride is a good oxidizing agent
- C \( \mathrm{Cl}_{2} \) oxidises \( \mathrm{H}_{2} \mathrm{O} \) to \( \mathrm{O}_{2} \) but \( \mathrm{F}_{2} \) does not
- D \( \mathrm{Cl}_{2} \) is a stronger oxidizing agent than \( \mathrm{F}_{2} \)
Answer & Solution
Correct Answer
(A) \( \mathrm{F}_{2} \) oxidises \( \mathrm{H}_{2} \mathrm{O} \) to \( \mathrm{O}_{2} \) but \( \mathrm{Cl}_{2} \) does not
Step-by-step Solution
Detailed explanation
(A)
\[
\begin{array}{l}
2 \mathrm{~F}_{2(g)}+2 \mathrm{H}_{2} \mathrm{O}_{(1)} \rightarrow 4 \mathrm{H}_{(a q)}+4 \mathrm{~F}_{(a q)}{ }^{-}+\mathrm{O}_{2(g)} \\
\mathrm{X}_{2(g)}+\mathrm{H}_{2} \mathrm{O}_{(l)} \rightarrow \mathrm{HX}_{(a q)}+\mathrm{HOX}_{(a q)}
\end{array}
\]
\[
\begin{array}{l}
2 \mathrm{~F}_{2(g)}+2 \mathrm{H}_{2} \mathrm{O}_{(1)} \rightarrow 4 \mathrm{H}_{(a q)}+4 \mathrm{~F}_{(a q)}{ }^{-}+\mathrm{O}_{2(g)} \\
\mathrm{X}_{2(g)}+\mathrm{H}_{2} \mathrm{O}_{(l)} \rightarrow \mathrm{HX}_{(a q)}+\mathrm{HOX}_{(a q)}
\end{array}
\]
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