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blagie [28]
4 years ago
11

A potential energy diagram is shown. What is the activation energy of this reaction?

Chemistry
1 answer:
xxMikexx [17]4 years ago
3 0

Answer:

Ea = 35 kJ.

Explanation:

Activation energy (Ea) is the difference between the potential energy of intermediate "activated complex/ peak" and reactants.

Ea = P.E. of products - P.E. of reactants = 65 kJ - 30 kJ = 35 kJ.

kindly find the attached image.

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Given the propane molecule C3H8(g)! a) What is the balanced equation for the combustion of propane in O2?(20 pts.) b) What is th
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Answer:

The answer to your question is below

Explanation:

Propane = C₃H₈

Process

1.- Write the chemical reaction

                     C₃H₈  +  O₂   ⇒   CO₂  +  H₂O

balanced chemical reaction

                      C₃H₈  +  5O₂   ⇒  3CO₂  +  4H₂O

               Reactants      Elements     Products

                      3                    C                  3

                      8                    H                  8

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Propane                  -104.7 kJ/mol

Oxygen                         0   kJ/mol

Carbon dioxide      -393.5 kJ/mol

Water                      -241.8 kJ/mol

ΔH° = ∑ΔH° products - ∑H° reactants

ΔH° = 3(-393.5) + 4(-241.8) - [(-104.7) + 0]

-Simplification

ΔH° = -1180.5 kJ/mol - 967.2 kJ/mol + 104.7 kJ/mol

ΔH° = - 2042.5 kJ/mol

This reaction is exothermic because ΔH° is negative.

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