Question

Coloured oxide that do not decompose on heating

Answer 1

answer - carbon dioxide is the coloured oxide that do not decompose on heating because

it can be seen that in both the examples the products are a metal oxide and carbon dioxide. The carbon dioxide gas can we detected using lime water. the more reactive metals is the more difficult it is to decompose its compounds.Threfore, Sodium and potassium carbonates are not affected by heat.