Which of the following statement is not correct ?
a)
The efficiency of a solid catalyst depends upon its surface area

b)
Catalyst operates by providing alternate path for the reaction that involves lower energy of activation
c)
Catalyst lower the energy of activation of the
forward reaction only
d)
Catalyst does not affect the overall enthalpy change of the reaction
Correct answer is option 'C'. Can you explain this answer?

Question

Which of the following statement is not correct ?

a)
The efficiency of a solid catalyst depends upon its surface area
b)
Catalyst operates by providing alternate path for the reaction that involves lower energy of activation
c)
Catalyst lower the energy of activation of the
forward reaction only
d)
Catalyst does not affect the overall enthalpy change of the reaction

Correct answer is option 'C'. Can you explain this answer?

Answer

Bcoz an ideal catalyst makes the forward reaction faster and prohibits backward reaction.

Answer

Catalyst lower the activation energy of both forward and backward reaction

Answer

Catalyst never lower the energy of activation of forward reaction . But it is always increase the rate of chemical reaction. and help to reaction forward.

Answer

Understanding Catalysts
A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process. It achieves this by lowering the activation energy required for the reaction to occur.
Why Option C is Incorrect
- Catalysts Affect Both Forward and Reverse Reactions:
- Option C states that 'catalysts lower the energy of activation of the forward reaction only.' This is not true. Catalysts lower the activation energy for both the forward and reverse reactions equally. This means that they accelerate the rate of both processes, allowing the system to reach equilibrium faster.
- Equal Impact on Energy of Activation:
- The presence of a catalyst does not favor one direction of the reaction over the other. It simply provides an alternative pathway that requires less energy for both the forward and reverse processes.
Key Functions of Catalysts
- Surface Area Dependency:
- The efficiency of a solid catalyst indeed depends on its surface area. A larger surface area allows more reactant molecules to interact with the catalyst, enhancing its effectiveness.
- Lower Energy Pathway:
- Catalysts work by providing an alternate reaction pathway with a lower activation energy, which is why they can speed up reactions.
- Enthalpy Change:
- Catalysts do not alter the overall enthalpy change of the reaction; they only affect the rate at which equilibrium is reached.
Conclusion
In conclusion, option C is incorrect because catalysts lower the activation energy for both the forward and reverse reactions, not just the forward one. Understanding how catalysts work is essential in chemistry, especially in industrial processes where efficiency is key.

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