CUET · CHEMISTRY · PYQ PAPER 2023
Identify 'X' along with oxidation state of halogen in the given reaction :
\(3\text{Cl}_2 + 6\text{NaOH} \rightarrow 5\text{NaCl}+\text{X} + 3\text{H}_2\text{O}\) (hot and conc.)
- A \(\text{NaClO}_2, +3\)
- B \(\text{NaClO}_3, +5\)
- C \(\text{NaClO}_2, +7\)
- D \(\text{NaClO}_3, +1\)
Answer & Solution
Correct Answer
(B) \(\text{NaClO}_3, +5\)
Step-by-step Solution
Detailed explanation
\(\text{Cl}_2 + 6\text{NaOH} \rightarrow 5\text{NaCl} + \text{NaClO}_3 + 3\text{H}_2\text{O}\) \(\text{X} = \text{NaClO}_3\) \(\text{Oxidation state of Cl in NaClO}_3\) \(1 + \text{Cl} + 3(-2) = 0\) \(1 + \text{Cl} - 6 = 0\) \(\text{Cl} = +5\)
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