Question

a white salt x on heating decomposes to give colourless gas Y, brown fumes of gas Z and yellow Residue is left Behind name the salt and write the reaction involved name the salt and write the reaction involved ​

Answer 1

the salt is ferrous sulphate..FeSO4

FeSO4 --∆---> Fe2O3 +SO2 + SO3

Fe2O3 is the yellow residue and SO2 is the colourless gas and SO3 liberates in the form of brown fumes...