Question

when potassium nitrate is heated it decomposes into potassium nitrite and oxygen write its balance equation and state symbols of the reactants and products?

Answer 1

when potassium nitrate is decomposes it forms potassium nitrite and oxygen
so here it is equation :
Reactant : Product :
KNO3 -------------> KNO2 + O2
potassium
nitrate --------------> potassium + oxygen
nitrite
As we know oxygen is always in the form of O2 so here below it's balance equation :
2KNO3 ----------------->2KNO2 + O2