Question

Which is more stable, the reactants or products?-products -reactants

Answer 1

Answer:

Reactants.  

Step-by-step explanation:

The reactants X+Y are more stable than the products Z+Q, because they are at a lower energy level.

You must go "uphill" in energy to get from reactants to products.

Answer 2

Answer: Reactants are more stable in the given reaction.

Explanation:

When heat is absorbed by reactant species from the surrounding then it is known as an endothermic reaction. In an endothermic reaction, energy of reactants is less than the energy of products.

It is known that when energy of a substance is more then it is considered as unstable and when energy of a substance is less then is is considered as stable.

So, when $\Delta H$ is positive then it means heat is absorbed by the system. And when  $\Delta H$ is negative then it means heat is released by the system.

Therefore, we can conclude that in the given reaction reactants are more stable than products.