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Chemical Kinetics — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryChemical Kinetics1 Mark
MCQ
Which of the following statement is not correct for the catalyst?
  • A
    It catalyses the forward and backward reaction to the same extent.
  • ✓
    It alters $\Delta\text{G}$ of the reaction.
  • C
    It is a substance that does not change the equilibrium constant of a reaction.
  • D
    It provides an alternate mechanism by reducing activation energy between reactants and products.
✓

Answer

Correct option: B.
It alters $\Delta\text{G}$ of the reaction.
A catalyst does not alter Gibbs energy$, (G)$ of a reaction. It catalyses the spontaneous reactions but does not catalyse non$-$spontaneous reactions.

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