Question

Which of the following is affected by catalyst?
(a) ∆H
(b) ∆S
(c) ∆G
(d) Ea

Answer 1

Answer:

Recall that catalysts are compounds that accelerate the progress of a reaction without being consumed. Common examples of catalysts include acid catalysts and enzymes. Catalysts allow reactions to proceed faster through a lower-energy transition state. By lowering the energy of the transition state, which is the rate-limiting step, catalysts reduce the required energy of activation to allow a reaction to proceed and, in the case of a reversible reaction, reach equilibrium more rapidly.

CatalysisA catalyst speeds up a reaction by lowering the activation energy required for the reaction to proceed.

Explanation:

D)Ea

Answer 2

(d) Ea is affected by the catalyst.

• Catalyst is defined as a compound which alters the rate of reaction, without being consumed. It does so by lowering activation energy represented by Ea.
• At the end of the reaction, substrates convert into products and the catalyst remains as it is. It may be chemical or biological.
• ∆H represents internal energy, ∆S refers to entropy and ∆G is Gibb's free energy.

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