How are the following aspects of a reaction affected by the addition of a catalyst?

By Rebecca
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How are the following aspects of a reaction affected by the addition of a catalyst? 1) activation energy of the reverse reaction

a. Increased

b. Decreased

c. Not affected

2) Rate of the forward reaction

a. Increased

b. Decreased

c. Not affected

3) Rate of the reverse reaction

a. Increased

b. Decreased

c. Not affected

4) Activation energy of the forward reaction

a. Increased

b. Decreased

c. Not affected

Answers:

1) activation energy of the reverse reaction

b. Decreased

2) Rate of the forward reaction

a. Increased

3) Rate of the reverse reaction

a. Increased

4) Activation energy of the forward reaction

b. decreased

Explanation:

Activation energy is the energy required by the reactants to form the intermediate transition state and become products.

Catalysts are substances that change the path of the chemical reactions, lowering the activation energy, and thus speeding up the rate of the reactions, since the products can reach the new lower activation energy faster.

The equilibrium reactions are the chemical process in which two reactions, the forward and the reverse reactions, occur simultaneously and at the same rate. The equilibrium reactions may be represented by:

  • A ⇄ B

Where A → B is the direct or forward reaction, and A ← B is the reverse reaction (note the inversed arrow, from right to left).

For the direct reaction, A represents the reactants and B represents the products. On the other hand, B represents the reactants and A represents the reactants of the reverse reaction, and A. This is A is the reactant of the forward reaction and the product of the reverse reaction, while B is the reactant of the reverse reaction and the product of the forward reaction.

Since the addition of a catalyst lowers the activation energy of the process, the new activation energy is lower for both the forward and the reverse reaction, meaning that:

1. The activation energy of the reverse reaction is decreased (option b. of the first question)

2. The rate of the forward reaction is increased (option a. of the second question)

3. The rate of the reverse reaction is increased (option a. of the third question).

4. Activation energy of the forward reaction is decreased (option b. of the fourth question).

In summary, the addition of a catalyst decreases the activation energy for both forward and reverse reactions, and increases the rate of both forward and reverse reactions.

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Rebecca is an Independent content writer for breldigital, She writes content on any given topic. She loves to write a case study article or reviews on a brand, Be it any topic, she nails it