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CGP EDU Academic Team
Published on: August 13, 2026
When an alkaline solution of K 2 CrO 4 is treated with 3% H 2 O 2 solution, red brown paramagnetic peroxochromate is obtained as per following equation.
2K 2 CrO 4 + 7H 2 O 2 + 2KOH → 2 K 3 CrO 8 + 8 H 2 O
The equivalent weight of K 2 CrO 4 for above transformation must be (assuming M is the molar mass of K 2 CrO 4 )
A
B
M
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Oxidation of Cr in K 3 CrO 8 = V
Cr +6 → Cr +5
Equivalent mass = 
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