Q. 7.70 - An Introduction to General, Organic, and Biological Chemistry

Question

Classify each of the following as exothermic or endothermic:

a. The energy level of the products is lower than that of the reactants.

b. In the body, the synthesis of proteins requires energy.

c. A reaction absorbs $125 \mathrm{kJ}.$

Step-by-Step Solution

Answer

(a) This reaction is exothermic reaction.

(b) In the body, the synthesis of proteins requires sources of dietary energy.

(c)  A reaction absorbs $125 \mathrm{kJ}$ is endothermic reaction.

Par(a) Step 1: Given information

We have been given,

The energy level of the products is lower than that of the reactants. 

Part(a) Step 2: Explanation

We know that, In Exothermic reaction, the energy of the product is lower than the energy of the reactants. Thus, heat is released in exothermic reactions. 

Part(b) Step 1: Given information

We have to find out name of requires energy in the body, the synthesis of proteins.

Part(b) Step 2: Explanation

Protein synthesis and potential breakdown (turnover) are both energy-intensive activities that are susceptible to energy restriction. As a result, the body's energy balance becomes a key element in regulating nitrogen balance and influencing dietary energy use.

Part(c) Step 1: Given information

We have to find out the A reaction absorbs $125 \mathrm{kJ}$ is endothermic or exothermic reaction.

Part(c) Step 2: Explanation

As we know that, In endothermic reaction, the energy of the products is higher than that of the reactants. Thus, heat is absorbed in endothermic reactions.