Question

The chemical composition of a catalyst remains intact during a chemical reaction. Explain.(HOTS)

Answer 1

Answer:

A catalyst remains unchanged in mass and chemical composition at the end of

A catalyst remains unchanged in mass and chemical composition at the end ofreaction

Qualitative and Quantitative analysis shows that catalyst undergoes no change in

mass or chemical nature however; it may undergo a physical-change. Thus, granular

granularmanganese dioxide (MnO2) used as catalyst in the thermal decomposition of potassium

chlorale is left as a fine powder at the end of the reaction. 

This is because catalyst in the rate of reaction by lowering the activation energy and then bind with reactant .

This may alter it shape but not its mass and chemical composition at the end of reaction.