Home
Class 12
CHEMISTRY
What is the role of a catalyst in a cata...

What is the role of a catalyst in a catalysed reaction

A

Lowers the activation energy

B

Increases the activation energy

C

Affects the free energy change

D

Affects the enthalpy charge

Text Solution

Verified by Experts

The correct Answer is:
A

All substance has average energy and before the reaction occurs energy of the reactant should be higher than the average energy. We also know that catalyst lower the activation energy. Therefore, rate of reaction is increased.
Promotional Banner

Topper's Solved these Questions

  • SURFACE CHEMISTRY

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Colloids, Emulsion, Gel and their properties with Application)|119 Videos
  • SURFACE CHEMISTRY

    ERRORLESS|Exercise PAST YEARS QUESTIONS|27 Videos
  • SURFACE CHEMISTRY

    ERRORLESS|Exercise ASSERTION AND REASON|14 Videos
  • SOLUTIONS

    ERRORLESS|Exercise ASSERTION AND REASON|16 Videos
  • THE d-AND f- BLOCK ELEMENTS

    ERRORLESS|Exercise Assertion and Reason |11 Videos

Similar Questions

Explore conceptually related problems

The role of a catalyst in a reversble reaction is to

The role of a catalyst is to change

What is the role of positive catalyst in a chemical reaction?

ERRORLESS-SURFACE CHEMISTRY-NCERT BASED QUESTIONS (Cataylst and catalysis)
  1. Shape selective catalysis is a reaction catalysed by

    Text Solution

    |

  2. Reactions in zeolites catalyst depends on :

    Text Solution

    |

  3. What is the role of a catalyst in a catalysed reaction

    Text Solution

    |

  4. Text Solution

    |

  5. which one of the following statements is correct? In a reversible reac...

    Text Solution

    |

  6. Catalyst used for hydrogenation of oil is-------

    Text Solution

    |

  7. Which of the following processes does not involve a catalyst ?

    Text Solution

    |

  8. The process which is catalysed by one of the products is called

    Text Solution

    |

  9. Which of the folowing process does not occur at the interface of phase...

    Text Solution

    |

  10. In which of the following reactions heterogeneous catalysis is involve...

    Text Solution

    |

  11. In the following reaction the catalyst used is

    Text Solution

    |

  12. An example of autocatalysis is

    Text Solution

    |

  13. Which of the following is used as a catalyst in the manufacture of tol...

    Text Solution

    |

  14. In the reversible reaction a catalyst is the substance which

    Text Solution

    |

  15. Which of the following reaction is catalysed by enzyme maltase?

    Text Solution

    |

  16. The effieciency of an enzyme in catalysing a reaction is due to its ca...

    Text Solution

    |

  17. Which of the following types of metal form the most efficient catalyst...

    Text Solution

    |

  18. Protons accelerate the hydrolysis of esters . This is an example os :

    Text Solution

    |

  19. Write the balanced reaction of titration of KMnO(4) Vs oxalic acid in ...

    Text Solution

    |

  20. Which of the following statements is wrong

    Text Solution

    |