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JEE Main Chemistry question

ChemistrySome Basic Concepts of ChemistryJEE Main

When a 40.00 g sample of NaH is treated with water, 3.00 g of dihydrogen gas was obtained. From this data, the percentage purity of NaH sample is %.

Answer: 90.09

Solution

: 1 mol NaH (24 g) gives 1 mol H (2 g), so 40.00 g of pure NaH would give

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Question ID VK-137519