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JEE Main Chemistry question

ChemistryRedox ReactionsJEE Main

0.31 g of an alloy of Fe + Cu was dissolved in excess dilute and the solution was made up to 100 mL. 20 mL of this solution required 3 mL of solution for exact oxidation. The % purity (to the closest value) of Fe in the alloy is .

Answer: 9

Solution

Meq of Meq of in the 20 mL aliquot. Meq of in the full 100 mL

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Question ID VK-137121