Question

A compound ‘X’ is heated it gives out a gas ‘Y’ which when passed through line water turns it milky and a salt ‘Z’ is forms which is the main constituent of washing power. Identify X,Y and Z. write balanced chemical equations for the reactions involved.

Answer 1

X → Y(g) + Z(salt)

2NaHCO3 → CO2(g) + NaOH(salt)

•C02 turns lime water milky
•NaOH is the main constituent of Washing Power (Na2CO3)

Therefore, X=NaHCO3 (sodium bicarbonate), Y=CO2(carbon dioxide), Z=NaOH(Sodium hydroxide)

Hope it helps you :)