Consider the energy profile for a chemical reaction: State the number of steps i

Question

Consider the energy profile for a chemical reaction: State the number of steps in the reaction: _____ Letters C and E represent: _____ Identify the slowest step in the reaction. Explain your choice. In an experiment, it was determined that rate of the reaction was 1^st order with respect to G. Write the rate law for the reaction: _____ What is the overall order of the reaction? Identify the step (s) which is/are endothermic. Is the overall enthalpy of the reaction positive or negative? Circle your choice positive negative Circle the compound expected to show the greatest equatorial preference. With the use of chair conformer briefly explain.

Explanation / Answer

(a) 3 steps

A -----------> C

C -----------> E

E ------------> G

(b)

C intermediat in first step

E is intermediate in second step

(c)

Secaond step i.e C -------------> E is slowest one as it requies most activation energy.

(d)

(i) Rate = k [A]

(ii) First order

(e) Only first step i.e A ------------> C

(f) Over all enthalpy of reaction is negative.

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