Q. 7.69 - An Introduction to General, Organic, and Biological Chemistry

Question

Classify each of the following as exothermic or endothermic:

a. A reaction releases $550 \mathrm{kJ}.$

b. The energy level of the products is higher than that of the reactants.

c. The metabolism of glucose in the body provides energy.

Step-by-Step Solution

Answer

(a) A reaction releases $550 \mathrm{kJ}$ is exothermic reactions.

(b) This type of reaction is endothermic reactions.

(c) Energy is the universal energy currency for metabolism and is employed in numerous metabolic activities.

Part(a) Step 1: Given information

We have to find out the a reaction released $550 \mathrm{kJ}$ is exothermic or endothermic reaction.

Part(a) Step 2: Explanation

As we know that, In an exothermic reaction, the energy of the products is lower than the energy of the reactants. Thus, heat is released in exothermic reactions.

Part(b) Step 1: Given information

We have been given,

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

Part(b) 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.

Part(c) Step 1: Given information

We have to find out the metabolism of glucose in the body provides energy. 

Part(c) Step 2: Explanation

As we know that, the glucose is consumed for energy and produces heat as it enters your cells. This process also produces adenosine triphosphate, or ATP, a chemical that allows the cell to release energy when needed. Energy is the universal energy currency for metabolism and is Employed in numerous metabolic activities.