APFIVE Reaction Profile Intermediate Energy
A reaction proceeds via a two-step mechanism. The first step is rate-determining, with an activation energy of 75 kJ/mol. The second, faster step has an activation energy of 25 kJ/mol. If the enthalpy change for the overall reaction is $$\Delta H = -40$$ kJ/mol, what is the energy of the intermediate relative to the reactants?
A
35 kJ/mol higher than reactants
B
75 kJ/mol higher than reactants
C
50 kJ/mol higher than reactants
D
40 kJ/mol lower than reactants
Question Leaderboard
| Rank | |||||
|---|---|---|---|---|---|
| #1 | chadyun356 | 1 | 1 | 0m 00s | 100 |
| #2 | gwantsai | 0 | 2 | 0m 00s | -20 |
| #3 | otterpop29 | 0 | 2 | 0m 08s | -28 |
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