JEE Mains · Chemistry · STD 12 - 4. d and f- block elements
A and \(B\) formed in the following reactions are _______. \(\mathrm{CrO}_2 \mathrm{Cl}_2+4 \mathrm{NaOH} \rightarrow \mathrm{A}+2 \mathrm{NaCl}+2 \mathrm{H}_2 \mathrm{O}\) \(\mathrm{A}+2 \mathrm{HCl}+2 \mathrm{H}_2 \mathrm{O}_2 \rightarrow \mathrm{B}+3 \mathrm{H}_2 \mathrm{O}\)
- A \(\mathrm{A}=\mathrm{Na}_2 \mathrm{CrO}_4, \mathrm{~B}=\mathrm{CrO}_5\)
- B \(\mathrm{A}=\mathrm{Na}_2 \mathrm{Cr}_2 \mathrm{O}_4, \mathrm{~B}=\mathrm{CrO}_4\)
- C \(\mathrm{A}=\mathrm{Na}_2 \mathrm{Cr}_2 \mathrm{O}_7, \mathrm{~B}=\mathrm{CrO}_3\)
- D \(\mathrm{A}=\mathrm{Na}_2 \mathrm{Cr}_2 \mathrm{O}_7,\mathrm{~B}=\mathrm{CrO}_5\)
Answer & Solution
Correct Answer
(A) \(\mathrm{A}=\mathrm{Na}_2 \mathrm{CrO}_4, \mathrm{~B}=\mathrm{CrO}_5\)
Step-by-step Solution
Detailed explanation
\(\mathrm{CrO}_2 \mathrm{Cl}_2+4 \mathrm{NaOH} \rightarrow \underset{\text { (A) }}{\mathrm{Na}_2 \mathrm{CrO}_4}+\underset{\text { (B) }}{2 \mathrm{NaCl}}+2 \mathrm{H}_2 \mathrm{O}\)…
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