Home
Class 12
CHEMISTRY
A chemical reaction was carried out at 3...

A chemical reaction was carried out at 300 K and 280 K. The rate constants were found to be `k_(1) and k_(2)` respectively. Then

A

`K_(2)=4K_(1)`

B

`K_(2)=2K_(1)`

C

`K_(2)=0.25K`

D

`K_(2)=0.5K_(1)`

Text Solution

Verified by Experts

The correct Answer is:
C
( c ) : For every `10^(@)C` rise in temperature, rate constant is doubled. Hence, for `20^(@)C` rise in temperature, rate constant will become 4 times, i.e., `K_(1)=4K_(2)" or "K_(2)=0.25K_(1).`
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    PRADEEP|Exercise TEST YOUR GRIP (FILL IN THE BLANK)|23 Videos

  • CHEMICAL KINETICS

    PRADEEP|Exercise CONCEPTUAL QUESTIONS (I. General introduction and rates of reactions)|6 Videos

  • CHEMICAL KINETICS

    PRADEEP|Exercise CURIOSITY QUESTION|2 Videos

  • BIOMOLECULES

    PRADEEP|Exercise IMPORTANT QUESTIONS (FOR BOARD EXAMINATION)|25 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    PRADEEP|Exercise IMPORTANT QUESTION FOR BOARD EXAMINATION|30 Videos

Similar Questions

Explore conceptually related problems

the hydrolysis of ethyl acetate was carried out separately with 0.05 MHCI and 0.05 M H_(2) SO_(4) .The rate constants were found to be K_(1) and K_(2) respectively . Then

Hydrolysis of amyl acetate was carried out separately in the presence of 0.02 M HCl and 0.02 M H_(2)SO_(4) The rate constants were found to be k_(1) and k_(2) then

Two reactions R_(2) and R_(2) have identical pre - exponential factors. Activations enery of R_(1) exceeds that of R_(2) by 10 kJ mol_(-1) . If k_(1) and k_(2) are rate constants for rate constants for reactions R_(1) and R_(2) respectively at 300k , then In (k_(2)/k_(1)) is equal to (R=8.314 J mol^(-1)K^(-1))

A reaction takes place in various steps. The rate constant for first, second, third and fifth steps are k1, k2, k3 and k5 respectively. The overall rate constant is is given by: k = k_(2)/k_(1) (k_(1)/k_(2))^(1/2) activation energy are 40,60, 50 and 10 kJ/mol respectively, find the overall energy of activation (kJ/mol).

Two different first order reaction have rate constants k_1 and k_2 at T_1(k_1 gt k_2) > If temperature is increased from T_1 " to " T_2 . Then new constants become k_3 and k_4 respectively. Which among the following relations is correct /

A reaction takes place in three rate determining steps having rate constants K_(1), K_(2), K_(3) respectively. The overall rate constant K=(K_(1)K_(3))/K_(2) . If energy of activations for the three steps are respectively 10, 20, 40 kJ . The overall energy of activation is:

PRADEEP-CHEMICAL KINETICS-TEST YOUR GRIP (MULTIPLE CHOICE QUESTIONS)
  1. The rate of the reaction 2NO+CI(2)rarr 2NOCI is given by the rate ...

    Text Solution

    |

  2. The unit of rate constant for a zero order reaction is

    Text Solution

    |

  3. A first order reaction has a half-life period of 34.65 seconds. Its ra...

    Text Solution

    |

  4. Rate constant of a reaction (k) is 175 "litre"^(2) "mol"^(-2)sec^(-1)....

    Text Solution

    |

  5. The molecularity and order of the reaction 2NO(g)+O(2)(g)to2NO(2)(g) a...

    Text Solution

    |

  6. Consider the reaction, Cl(2)(aq) + H(2)S(aq) rarr S(s) + 2H^(+) (aq)...

    Text Solution

    |

  7. The plot of concentration of the reactant vs time for a reaction is a ...

    Text Solution

    |

  8. The reaction A toB follows first order reaction. The time taken for 0....

    Text Solution

    |

  9. The rate of a chemical reaction doubles for every 10^(@)C rise of temp...

    Text Solution

    |

  10. If 75% of first order reaction is completed in 32 min, then 50% of the...

    Text Solution

    |

  11. 1//[A] versus time is a straight line, the order of reaction is

    Text Solution

    |

  12. The rate constant, the activation energy and the Arrhenius parameter o...

    Text Solution

    |

  13. If a graph is plotted between ln k and 1//T for the first order reacti...

    Text Solution

    |

  14. A chemical reaction was carried out at 300 K and 280 K. The rate const...

    Text Solution

    |

  15. Collision theory is applicable to

    Text Solution

    |

  16. 10 g of a radioactive isotope is reduced to 1.25 g in 12 years. Theref...

    Text Solution

    |

  17. The half-life period of a redioactive element is 20 days. What will be...

    Text Solution

    |

  18. The chemical reactions in which the reactants require high amount of a...

    Text Solution

    |

  19. If the activation enery for the forward reaction is 150 "kJ mol"^(-1) ...

    Text Solution

    |

  20. When ethyl acetate was hydrolyzed in the presence of 0.1 M HCl, the co...

    Text Solution

    |