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JEE Main Chemistry question

ChemistryRedox ReactionsJEE Main

The value 'y' for the following redox reaction occurring in basic medium is : a\,Cr(OH)_4^-+b\,ClO^-+c\,OH^- \to x\,CrO_4^{2-}+y\,Cl^-+zH_2O(l)

Answer: 3

Solution

Cr: (3-electron loss); Cl: (2-electron gain). Balancing electrons:

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Question ID VK-137171