Verified Solution • 2025–26 Session moderate

QJEEM24Ch25a1: JEE Main 2024 Chemistry - Class 11 JEEM24Ch25a1 Solution: In the reaction of potassium dichromate, potassium chloride and …

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

Step-by-Step Verified Solution

$\begin{aligned} K_{2} {Cr}_{2} O_{7} (s) + 4 KCl (s) + 6 H_{2} {SO}_{4} (conc.) \\ \to 2 {CrO}_{2} {Cl}_{2} (g) + 6 {KHSO}_{4} + 3 H_{2} O \end{aligned}$

This reaction is called chromyl chloride test.

Here oxidation state of $Cr$ is +6.

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