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JEE Main Chemistry question

ChemistryRedox ReactionsJEE Main

NaSO reduces CrO to Cr(OH). How many moles of NaSO are required by 100 L of waste water having M?

Answer: 9

Solution

Moles CrO mol; each Cr() gains 3 electrons, so total electrons needed mol. NaSO (S is ) is

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Question ID VK-130727