500 mL of 2 M HCl, 100 mL of 2 M H_(2)SO_(4) and one gram equivalent of monoacidic alkali are mixed together. 30 mL of this solution required 20 mL of Na_(2)CO_(3). xH_(2)O solution obtained by dissolving 143 g Na_(2)CO_(3).xH_(2)O in one litre solution. Calculate the water of crystallisation of Na_(2)CO_(3) .xH_(2)O.

500 mL of 2 M HCl, 100 mL of 2 M H_(2)SO_(4) and one gram equivalent o

1.	500 mL of 2 M HCl, 100 mL of 2 M H_(2)SO_(4) and one gram equivalent of monoacidic alkali are mixed together. 30 mL of this solution required 20 mL of Na_(2)CO_(3). xH_(2)O solution obtained by dissolving 143 g Na_(2)CO_(3).xH_(2)O in one litre solution. Calculate the water of crystallisation of Na_(2)CO_(3) .xH_(2)O.
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