Question

In an endothermic reaction, the value of ΔH is always________

Answer 1

Endothermic reaction:-

1. It is a type of chemical reaction in which there is an absorption of heat from the surrounding.
2. The absorbed heat provides the proper activation energy for the reaction to take place.
3. Activation energy is defined as the minimum amount of extra energy required by a reacting molecule to get converted into a product.

Enthalpy change ($∆\mathrm{H}$) :-

1. It stands for the change or difference between the enthalpies of the product and the reactant.
2. In endothermic reaction enthalpy of the products is higher than the enthalpy of the reactants.

Therefore, In an endothermic reaction, the value of $∆\mathrm{H}$ is always positive.