Question

Na2co3.xh2o loses 14.5% h2o on heating.. Value of x is

Answer 1

x 100Dear Student,

Given: NagCO3.XH20 loses 14.5 H2O or 14.5%

mass on heating

Molar mass of salt (Na2CO3.xH20 )-106+18x

% H30massof water

molar mass of salt18

106+1814.5

on solving we get x-1

Regards!x 100

Answer 2

Na2CO3= (2×23)+12+48 =106

Accordingly, by law of percentage of mass

18x/(106+18x) = 14.5/100

Now on solving you will get the value of x.