1. use the diagram to the right to answer the following question: /4
a) is the reaction exothermic or endothermic?
b) what is the activation energy for the reaction?
c) what chemical species forms as the reaction intermediate/activated complex?
d) which molecule in this reaction has the highest potential energy?

Question

Accepted Answer

### Part (a)
# Explanation:
## Step1: Recall exothermic/endothermic definitions
Exothermic: products have less energy than reactants. Endothermic: products have more energy than reactants.
## Step2: Compare reactant and product energy
Reactant ($X_2 + Y_2$) energy: 50 kJ. Product ($2XY$) energy: 100 kJ. Since product energy > reactant energy, the reaction is endothermic.
# Answer: Endothermic

### Part (b)
# Explanation:
## Step1: Recall activation energy definition
Activation energy ($E_a$) is the energy difference between reactants and the activated complex.
## Step2: Calculate $E_a$
Reactant energy: 50 kJ. Activated complex ($X_2Y_2$) energy: 130 kJ. $E_a = 130 - 50 = 80$ kJ.
# Answer: 80 kJ

### Part (c)
# Explanation:
## Step1: Recall activated complex definition
The activated complex (reaction intermediate) is the high - energy species at the peak of the potential energy diagram.
## Step2: Identify the species
From the diagram, the species at the peak is $X_2Y_2$.
# Answer: $X_2Y_2$

### Part (d)
# Explanation:
## Step1: Recall potential energy in the diagram
The species with the highest potential energy is at the peak of the potential energy curve.
## Step2: Identify the molecule
From the diagram, the species at the peak (highest potential energy) is $X_2Y_2$.
# Answer: $X_2Y_2$

Sovi.AI - AI Math Tutor

QUESTION IMAGE

Question

Explanation:

Part (a)

Step1: Recall exothermic/endothermic definitions

Step2: Compare reactant and product energy

Step1: Recall activation energy definition

Step2: Calculate \(E_a\)

Step1: Recall activated complex definition

Step2: Identify the species

Answer:

Part (b)