Home
Class 12
CHEMISTRY
If a reaction A+BrarrC is exothermic to ...

If a reaction `A+BrarrC` is exothermic to the extent of `30 KJ mol^(-1)`, the the forward reaction has an activation energy , `70KJ mol^(-1)`, the activation energy for the reverse reaction is

A

`30 kJ mol^(-1)`

B

`40 kJ mol^(-1)`

C

`70 kJ mol^(-1)`

D

`100 kJ mol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D

By seeing the curve, activation energy for backward reaction `= 100 kJ`
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    CENGAGE CHEMISTRY|Exercise Exercises Assertion-Reasoning|22 Videos

  • CHEMICAL KINETICS

    CENGAGE CHEMISTRY|Exercise Exercises Integer|15 Videos

  • CHEMICAL KINETICS

    CENGAGE CHEMISTRY|Exercise Exercises Multiple Correct|34 Videos

  • CARBOXYLIC ACIDS AND THEIR DERIVATIVES

    CENGAGE CHEMISTRY|Exercise Exercises Archives (Analytical And Descriptive)|34 Videos

  • COORDINATION COMPOUNDS

    CENGAGE CHEMISTRY|Exercise Archives Subjective|18 Videos

Similar Questions

Explore conceptually related problems

The energy required to form the intermediate, called activated complex (C ) is known as activation energy (E_(a)) . The diagram is obtained by plotting potential energy vs. reaction coordinate. Reaction coordinate represents the profile of energy change when reactants change into products. Some energy is released when the complex decomposes to form products. So, the heat of the reaction depends upon the nature of reactants and products. If a reaction A+Brarr C , is exothermic to the extent of 30 kJ mol^(-1) and the forward reaction has an activation energy of 249 kJ mol^(-1) , the activation energy for reverse reaction in kJ mol^(-1) is:

A colliison between reactant molecules must occur with a certain minimum energy before it is effective in yielding Product molecules. This minimum energy is called activation energy E_(a) Large the value of activation energy, smaller the value of rate constant k . Larger is the value of activation energy, greater is the effect of temperature rise on rate constant k . E_(f) = Activation energy of forward reaction E_(b) = Activation energy of backward reaction Delta H = E_(f) - E_(b) E_(f) = threshold energy If a reaction A + B rarr C is exothermic to the extent 30 kJ mol^(-1) and the forward reaction has an activation energy of 249 kJ mol^(-1) the activation energy for reverse reaction in kJ mol^(-1) is

If a reaction A+B to C is exothermic to the extent of 30KJ/mol, the forward reaction has an activation energy 70KJ/mol. The activation energy for the reverse reaction is

The reaction A+B rarr C+D+40KJ has activation energy of "18KJ" .Then the activation energy for the reaction C+D rarr A+B is

The activation energy for the forward reaction X rarr Y is 60 kJ mol^(-1) and Delta H is -20 kJ mol^(-1) . The activation energy for the reverse reaction is

In an exothermic reaction A rarr B , the activation energy of the forward reaction is 200 kJ mol^(-1) . The enthalpy of the reaction is 280 kJ mol^(-1) . The activation energy of the reverse reaction B rarr A is

CENGAGE CHEMISTRY-CHEMICAL KINETICS-Exercises Single Correct
  1. In a reaction carried out at 500 K, 0.001% of the total number of coll...

    Text Solution

    |

  2. The thermal decompoistion of compound is of first order. If 50% of a s...

    Text Solution

    |

  3. If a reaction A+BrarrC is exothermic to the extent of 30 KJ mol^(-1), ...

    Text Solution

    |

  4. The rate constant, the activation energy, and the Arrhenius parameter ...

    Text Solution

    |

  5. The reaction A(g)+2B(g)rarrC(g)+D(g) is an elementary process. In an e...

    Text Solution

    |

  6. A catalyst decreases E(a) form 100 KJ mol^(-1) to 80 KJ mol^(-1) At wh...

    Text Solution

    |

  7. Which of the following graphs is for a second order reaction?

    Text Solution

    |

  8. The accompanying figure depicts a change in concentration of species A...

    Text Solution

    |

  9. Which of the following is correct graph for the reaction?

    Text Solution

    |

  10. Which of the following graphs represents zero order if A rarr P At...

    Text Solution

    |

  11. Which of the following expresisons give the effect of temperature on t...

    Text Solution

    |

  12. The plot og log k vs 1//T helps to calculate

    Text Solution

    |

  13. For a first order reaction t(0.75) is 1386 s. Therefore, the specific ...

    Text Solution

    |

  14. In a first order reaction, the concentration of the reactant decreases...

    Text Solution

    |

  15. The rate equation for the reaction 2A+B rarr C is found to be: rate = ...

    Text Solution

    |

  16. A graph plotted between log k versus 1//T for calculating activation e...

    Text Solution

    |

  17. The potential energy diagram for a reaction R rarr P is given below. D...

    Text Solution

    |

  18. The activation energy for a ismple chemical reaction A rarr B is E(a) ...

    Text Solution

    |

  19. The reaction Ararr B follows first order kinetics. The time taken for ...

    Text Solution

    |

  20. The quantum yield of photosyntheiss of

    Text Solution

    |