Question

Consider a hypothetical chemical reaction: A + B ? C + D (In this equation A, B, C and D stand for some unknown chemical formulas.) Here is an energy diagram for the reaction: energy (kJ/mol) 400 300 C + D 200 A + B 100 0 reaction coordinate Use the energy diagram to answer these questions. What is the heat of reaction? kJ/mol Is the reaction exothermic or endothermic? Exothermic Endothermic Neither Can you determine the activation energy? Yes, it's kJ/mol No. Can you determine the activation energy of the reverse reaction? C + D ? A + B Yes, it's kJ/mol No.

          Consider a hypothetical chemical reaction:
A + B ? C + D
(In this equation A, B, C and D stand for some unknown chemical formulas.)
Here is an energy diagram for the reaction:
energy (kJ/mol)
400
300
C + D
200
A + B
100
0
reaction coordinate
Use the energy diagram to answer these questions.
What is the heat of reaction?
kJ/mol
Is the reaction exothermic or endothermic?
Exothermic
Endothermic
Neither
Can you determine the activation energy?
Yes, it's kJ/mol
No.
Can you determine the activation energy of the reverse reaction?
C + D ? A + B
Yes, it's kJ/mol
No.

Consider a hypothetical chemical reaction:
A + B ? C + D
(In this equation A, B, C and D stand for some unknown chemical formulas.)
Here is an energy diagram for the reaction:
energy (kJ/mol)
400
300
C + D
200
A + B
100
0
reaction coordinate
Use the energy diagram to answer these questions.
What is the heat of reaction?
kJ/mol
Is the reaction exothermic or endothermic?
Exothermic
Endothermic
Neither
Can you determine the activation energy?
Yes, it's kJ/mol
No.
Can you determine the activation energy of the reverse reaction?
C + D ? A + B
Yes, it's kJ/mol
No.

Added by Jesse H.

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