JEE Mains · Chemistry · STD 12 - 4. d and f- block elements
Consider the following reactions.
\(\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7 \xrightarrow[-\mathrm{H}_2 \mathrm{O}]{\mathrm{KOH}}[\mathrm{A}] \xrightarrow[-\mathrm{H}_2 \mathrm{O}]{\mathrm{H}_2 \mathrm{SO}_4}[\mathrm{~B}]+\mathrm{K}_2 \mathrm{SO}_4\)
The products \([A]\) and \([B]\), respectively are :
- A \(\mathrm{K}_2 \mathrm{CrO}_4\) and CrO
- B \(\mathrm{K}_2 \mathrm{CrO}_4\) and \(\mathrm{Cr}_2 \mathrm{O}_3\)
- C \(\mathrm{K}_2 \mathrm{CrO}_4\) and \(\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7\)
- D \(\mathrm{K}_2 \mathrm{Cr}(\mathrm{OH})_6\) and \(\mathrm{Cr}_2 \mathrm{O}_3\)
Answer & Solution
Correct Answer
(C) \(\mathrm{K}_2 \mathrm{CrO}_4\) and \(\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7\)
Step-by-step Solution
Detailed explanation
\(\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7 \xrightarrow[-\mathrm{H}_2 \mathrm{O}]{\mathrm{KOH}} \mathrm{K}_2 \mathrm{CrO}_4 \xrightarrow[-\mathrm{H}_2 \mathrm{O}]{\mathrm{H}_2 \mathrm{SO}_4} \mathrm{~K}_2 \mathrm{Cr}_2 \mathrm{O}_7+\mathrm{K}_2 \mathrm{SO}_4\) [A]…
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