When 16.8g of whitesolid X was heated, 4.4 g ofacid gas A thatturnedlime watermilkywas driven offtogather with 1.8 g of a gas B whichcondensed to acolourless liquid The solid that remained Ydissolved in waterto givean alklinesolution , which with excess bariumchloride solutiongave a whiteprecipitate Z .THe precipitateeffecverscedwithh acidgivingcarbondioxide identify A,B and Y and writetheequationfor thedecomposition of X

When 16.8g of whitesolid X was heated, 4.4 g ofacid gas A thatturnedli

1.	When 16.8g of whitesolid X was heated, 4.4 g ofacid gas A thatturnedlime watermilkywas driven offtogather with 1.8 g of a gas B whichcondensed to acolourless liquid The solid that remained Ydissolved in waterto givean alklinesolution , which with excess bariumchloride solutiongave a whiteprecipitate Z .THe precipitateeffecverscedwithh acidgivingcarbondioxide identify A,B and Y and writetheequationfor thedecomposition of X
Answer» Solution :`X: NaHCO_(3) ,Y : Na_(2)CO_(3) ,A: CO_(2) , B: H_(2)O` `rArr` X must be bicarbonate Let `MHCO_(3)` be the bicarbonate `underset(16.8)(2MHCO_(3)) overset(DELTA)(to) underset(4.4g -0.1 MOL -0.1mol)(CO_(2))` + `underset(1.8 g)(H_(2)O)` + `M_(2)CO_(3)` `rArr` Mole of `MHCO_(3) = 0.2` `rArr 0.2 = (16.8)/(M_(0)) ,M_(0) = 84` `MHCO_(2) rArr M + 60 + 1= 84` Atomic mass of `M = M = 23` `rArr M is Na rArr X "is" NaHCO_(3)`