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charan ram Grade: 11
        

The hydrated salt Na2CO3.xH2O undergoes 46% loss in mass on heating and becomes anhydrous.then wat is the value of 'X'?

6 years ago

Answers : (1)

Fawz Naim
37 Points
										

The hydrated sodium carbonate is converted into anhydrous sodium carbonate on heating which means that X molecoles of water are separated completely. Therefore the loss in weight is equal to the X molecules of water.


46% of the weight of hydrated sodium carbonate=18X molecules of water


the molecular weight of sodium carbonate is 106 and that of water is 18


therefore 46%*(106+18X)=18X


find the value of X

6 years ago
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