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JEE Main Chemistry question

ChemistrySome Basic Concepts of ChemistryJEE Main

(I) 'x' grams of CaH reacts with water to form 2 moles of dihydrogen gas. (II) 'y' grams of LiH reacts with water to form 2 moles of dihydrogen gas. Based on this data, find the value of (x − y). [Given: atomic masses of H = 1, Li = 7, O = 16, Ca = 40 u]

Answer: 26

Solution

: 1 mol CaH (molar mass g) gives 2 mol H, so . $LiH + H_2O

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Question ID VK-137506