Chemistry · d and f Block Elements

JEE Main 2024 — 31 January, Shift 2 — Question 76

In the reaction of potassium dichromate, potassium chloride and sulfuric acid (conc.), the oxidation state of the chromium in the product is $(+)$ $\qquad$ .

Answer: 6

Numerical answer — enter this value.

Step-by-step solution

$\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}(\mathrm{~s})+4 \mathrm{KCl}(\mathrm{s})+6 \mathrm{H}_{2} \mathrm{SO}_{4}$ (conc.)

$\rightarrow 2 \mathrm{CrO}_{2} \mathrm{Cl}_{2}(\mathrm{~g})+6 \mathrm{KHSO}_{4}+3 \mathrm{H}_{2} \mathrm{O}$

This reaction is called chromyl chloride test. Here oxidation state of Cr is +6 .

Answer key and solution verified before publishing.

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Exam: JEE Main 2024
Paper: 31 January, Shift 2
Subject: Chemistry
Chapter: d and f Block Elements
Topic: Compounds of Chromium

Choose the correct statements from the following A. Mn 2 O 7 is an oil at room temperature B. V 2 O 4 reacts with acid to give VO 2^2+ C.…

Answer: 6

Step-by-step solution

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