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A crystalline salt Na2SO4.xH2O on heating losses 55.9 per cent of its mass. The formula of crystalline salt is---
Mol. wt. of hydrated salt = 46 + 96 + 18x = 142 +18xWt. of water lost = 18xSo, by given, 18x / (142+18x) = 55.9On sloving, we get, x=10So Formula = Na2SO4. 10 H2O
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