Question

The crystalline salt na2co3. xh2o in heating loses 63% of it's mass and become anhydrous. The formula of the compound is

Answer 1

Explanation:

Na2CO3.10H2O become anhydrous and become Na²CO³.there is loss of 10H20.

Total mass of Na2CO3.10H20 =46+12+48+10×18=286

Mass of 10 H2O=180

loss percent=180/286×100=63%