Home
Class 12
CHEMISTRY
For a first order reaction rate is given...

For a first order reaction rate is given by , R=K[Reactant] where `K=a.e^(-E_(alpha)//RT)`. Under what conditions will the rate of the reaction be smallest?

A

Low concentration of reactant, high temperature and low activation energy.

B

High concentration of raectant, low temperature and low activation energy.

C

Low cocentration of reactants, low temperature and high activation energy.

D

High concentration of reactant, low temperature and high activation energy.

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    GRB PUBLICATION|Exercise Mechanism of Reactions|45 Videos

  • CHEMICAL KINETICS

    GRB PUBLICATION|Exercise compllcatio in first order reactions|17 Videos

  • CHEMICAL KINETICS

    GRB PUBLICATION|Exercise E. Methods to Monitor the Progress of Reaction|43 Videos

  • CHEMICAL BONDING-I

    GRB PUBLICATION|Exercise Subjective Type|120 Videos

  • COORDINATION COMPOUNDS

    GRB PUBLICATION|Exercise SBJECTIVE TYPE|98 Videos

Similar Questions

Explore conceptually related problems

The rate constant is given by the equation K=Ae^(-E_(a)//RT) which factor should register a decrease for the reaction to proceed more rapidly:

The rate constant is given by the equation k = P.Ze^(-E_(a)//RT) . Which factor should register a decrease for the reaction to proceed more rapidly?

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 The rate constant of a certain reaction is given by k = Ae^(-E_(a)//RT) (where A = Arrhenius constant). Which factor should be lowered so that the rate of reaction may increase?

In Arrhenius equation k = Ae^(-E_(a)//RT)) , A is the value of the rate constant

In a first order reaction A to B, if k is rate constant and initial concentration of the reactant A is 2 M then the half life of the reaction is:

Arrhenius equation k=Ae^(-E_(a)//RT) If the activation energy of the reaction is found to be equal to RT then,

The rate constant 'K' for pseudo first order reaction is

GRB PUBLICATION-CHEMICAL KINETICS-F. Effect of Temperature and Catalyst
  1. A first order reaction is catalysed by a catalyst which decreases acti...

    Text Solution

    |

  2. For two reactions: R-I and R-II the rate constants at 300 K and 320 K ...

    Text Solution

    |

  3. For a first order reaction rate is given by , R=K[Reactant] where K=a....

    Text Solution

    |

  4. The energies of activation forward and revers reaction for A(2)+B(2)to...

    Text Solution

    |

  5. For an elementary reaction the variation of rate constant (k) with tem...

    Text Solution

    |

  6. If it known that 1 out of every 4 collisions has appropriate orientati...

    Text Solution

    |

  7. In the respect of the equation k=Ae^(-E(a)//RT) is chemical kinetics, ...

    Text Solution

    |

  8. The variation of rate constant with temperature forllow sthe equations...

    Text Solution

    |

  9. For a certain gaseous reactions a 10^(@)C rise of temp, from 25^(@)C t...

    Text Solution

    |

  10. Following are the values of E(a) and DeltaH for three reactions carrie...

    Text Solution

    |

  11. Milk turns sour at 40^(@)C three times faster than at 0^(@)C. Hence, E...

    Text Solution

    |

  12. Two reaction A to products and B to products have rate constant k(a)...

    Text Solution

    |

  13. At room temperature, the reaction between NO and O(2) to give NO(2) is...

    Text Solution

    |

  14. Consider an eendothermic reaction XrarrY with the activation energies ...

    Text Solution

    |

  15. For a first order reaction ArarrP , the temperature (T) dependent rate...

    Text Solution

    |

  16. 75% of a first order reaction occurs in 30 min at 27^(@)C . 87.5% of ...

    Text Solution

    |

  17. A catalyst increases the rate of reaction by :

    Text Solution

    |

  18. The decomposition of a drug in human was found to be a first order pro...

    Text Solution

    |

  19. An exothermic reaction ArarrB has an activation energy of 17 kJ per mo...

    Text Solution

    |

  20. For a gas reaction ArarrP at T (K) the rate is given by : Rate=k^('...

    Text Solution

    |