Question

Which is correct regarding an endothermic reaction?

a. the reaction does not occur.
b. the reaction liberates heat.
c. the enthalpy of the reactants is higher than the enthalpy of the products.
d. the sign of the h is positive.
e. the temperature increases when the reaction is carried out in a calorimeter?

Answer 1

An endothermic reaction absorbs heat from the surroundings, and the temperature of the surroundings decreases. In an exothermic reaction, heat is released by the system into the surroundings, and the temperature of the surroundings increases.

Step-by-step explanation:

A chemical reaction or physical change is endothermic if heat is absorbed by the system from the surroundings. In the course of an endothermic process, the system gains heat from the surroundings and so the temperature of the surroundings decreases. The quantity of heat for a process is represented by the letter q. The sign of q for an endothermic process is positive because the system is gaining heat. A chemical reaction or physical change is exothermic if heat is released by the system into the surroundings. Because the surroundings are gaining heat from the system, the temperature of the surroundings increases. The sign of q for an exothermic process is negative because the system is losing heat.

Answer 2

I believe the correct answer would be that the enthalpy of the reactants is higher than the enthalpy of the products. An endothermic reaction is one that absorbs heat or energy is supplied for a reaction to proceed. Hope this helps. Have a nice day.