Question

For an endothermic reaction, which of the following conditions must be true for all products?

The change in enthalpy is positive and potential energy diagram is higher.
The change in enthalpy is negative and potential energy diagram is higher.
The change in enthalpy is positive and potential energy diagram is lower.
The change in enthalpy is negative and potential energy diagram is lower.

Answer 1

Answer: Option (a) is the correct answer.

Step-by-step explanation:

A chemical reaction in which energy or heat is absorbed by the reactant molecules is known as endothermic reaction.

Since heat is being absorbed so products formed will have high energy. Hence, change in enthalpy will be positive.

Thus, we can conclude that the change in enthalpy is positive and potential energy diagram is higher.

Answer 2

The conditions that must be true for all products is that the change in enthalpy is positive and the potential energy diagram is lower.
An endothermic chemical reaction is one that gains energy from the environment; therefore the energy of the products is higher than that of the reactants.