KCET · Chemistry · Biomolecules
Select wrong chemical reaction among thefollowing:
- A \( \mathrm{MnO}_{2}+4 \mathrm{HCl} \rightarrow \mathrm{MnCl}_{2}+\mathrm{Cl}_{2}+2 \mathrm{H}_{2} \mathrm{O} \)
- B \( 8 \mathrm{NH}_{3}+3 \mathrm{Cl}_{2} \rightarrow 6 \mathrm{NH}_{4} \mathrm{Cl}+\mathrm{N}_{2} \)
- C \( 2 \mathrm{NaOH}+\mathrm{Cl}_{2} \rightarrow 2 \mathrm{NaCl}+\mathrm{H}_{2}+\mathrm{O}_{2} \)
- D \( 2 \mathrm{Ca}(O H)_{2}+2 \mathrm{Cl}_{2} \rightarrow \mathrm{Ca}(O C l)_{2}+\mathrm{CaCl}_{2}+2 \mathrm{H}_{2} O \)
Answer & Solution
Correct Answer
(C) \( 2 \mathrm{NaOH}+\mathrm{Cl}_{2} \rightarrow 2 \mathrm{NaCl}+\mathrm{H}_{2}+\mathrm{O}_{2} \)
Step-by-step Solution
Detailed explanation
When \( \mathrm{NaOH} \) reacts with \( \mathrm{Cl}_{2} \), hydrogen gas does not liberate, therefore, this reaction is wrong reaction.
Correct reaction is,
\( 2 \mathrm{NaOH}+\mathrm{Cl}_{2} \rightarrow \mathrm{NaCl}+\mathrm{NaClO}+\mathrm{H}_{2} \mathrm{O} \)
Correct reaction is,
\( 2 \mathrm{NaOH}+\mathrm{Cl}_{2} \rightarrow \mathrm{NaCl}+\mathrm{NaClO}+\mathrm{H}_{2} \mathrm{O} \)
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