Home
Class 12
CHEMISTRY
For a reaction A to B , the rate of reac...

For a reaction `A to B` , the rate of reaction becomes twenty seven times when the concentration of A is increased three times. What is the order of the reaction?

Text Solution

Verified by Experts

For the given reaction, let `r = k[A]^n`
` therefore 27 r=K [3A]^n , (27r)/(r ) = (k [3A]^n)/(k[A]^n)=[3]^n`
` therefore ` order of reaction ` n=3`
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    ICSE|Exercise EXERCISE (PART- II (DESCRIPTIVE QUESRTIONS) B. SHORT ANSWER QUESTIONS ) |119 Videos
  • CHEMICAL KINETICS

    ICSE|Exercise EXERCISE (PART- II (DESCRIPTIVE QUESRTIONS) C.LONG ANSWER QUESTIONS ) |54 Videos
  • CHEMICAL KINETICS

    ICSE|Exercise EXERCISE (PART- I (OBJECTIVE QUESRTIONS) D. MATCH THE FOLLOWING ) |3 Videos
  • BIOMOLECULES

    ICSE|Exercise ISC EXAMINATION QUSTIONS (PART-I)(DESCRIPTIVE QUESTIONS)|21 Videos
  • CHEMISTRY IN EVERYDAY LIFE

    ICSE|Exercise EXERCISE (PART - II (DESCRIPTIVE QUESTIONS) (LONG ANSWER QUESTIONS))|19 Videos

Similar Questions

Explore conceptually related problems

For the reaction 2X to X_2 , the rate of reaction becomes three times when the concentration of X is increased 27 times. What is the order of the reaction?

For the reaction AtoB , the rate of reaction becomes three times when the concentration of A is increased by nine times. What is the order of reaction ?

For a chemical reaction A rarr B , it is found that the rate of reaction doubles when the concentration of A is increased 4 times. What is the order of reaction ? Suggest the rate law also.

For a chemical reaction A rarr B , the rate of reaction increases by a factor of 1.837 when the concentration of A is increased by 1.5 time. The order of reaction with respect to A is:

For a reaction 2NO(g)+Cl_(2)(g) hArr 2NOCl(g) .When concentration of Cl_(2) is doubled, the rate of reaction becomes two times of the original. When the concentration of NO is doubled the rate becomes four times. What is the order of the reaction

The order of reaction is an experimentally determined quanity. It may be zero, poistive, negative, or fractional. The kinetic equation of nth order reaction is k xx t = (1)/((n-1))[(1)/((a-x)^(n-1)) - (1)/(a^(n-1))] …(i) Half life of nth order reaction depends on the initial concentration according to the following relation: t_(1//2) prop (1)/(a^(n-1)) ...(ii) The unit of the rate constant varies with the order but general relation for the unit of nth order reaction is Units of k = [(1)/(Conc)]^(n-1) xx "Time"^(-1) ...(iii) The differential rate law for nth order reaction may be given as: (dx)/(dt) = k[A]^(n) ...(iv) where A denotes the reactant. In a chemical reaction A rarr B , it is found that the rate of the reaction doubles when the concentration of A is increased four times. The order of the reaction with respect to A is:

In a reaction A to B the rate of reaction increases two times on increasing the concentration of the reactant four times, then order of reaction is

For a reaction 3A rarr Products, it is found that the rate of reaction doubles. If the concentration of A is increased four times, calculated the order of reaction.

ICSE-CHEMICAL KINETICS-EXERCISE (PART- II (DESCRIPTIVE QUESRTIONS) A. VERY SHORT ANSWER QUESTIONS (WITH ANSWERS ))
  1. For the reaction, Ester + H^(+) to Acid + Alcohol, rate = k[Ester] [H...

    Text Solution

    |

  2. For a reaction A +2B to C, rate =k[A]^x [B]^y. What is the order of r...

    Text Solution

    |

  3. For a reaction A to B , the rate of reaction becomes twenty seven time...

    Text Solution

    |

  4. For the reaction Cl2 (g) +2 NO(g) to 2 NOCI((g)) the rate law is exp...

    Text Solution

    |

  5. Is there any reaction for which reaction rate does not decrease with t...

    Text Solution

    |

  6. A reaction is 50% complete in 2 hours and 75% complete in 4 hours. Wha...

    Text Solution

    |

  7. The rate of reaction X to Y becomes 8 times when the concentration of...

    Text Solution

    |

  8. A first order reaction is 50% complete in 20 minutes. What is its rate...

    Text Solution

    |

  9. What is the order of a reaction whose rate constant has the same units...

    Text Solution

    |

  10. How is half-life period of a reaction is inversely proportional to ini...

    Text Solution

    |

  11. In some cases, it is found that large number of colliding molecules ha...

    Text Solution

    |

  12. In the reaction Ato B , if the concentration of A is plotted against t...

    Text Solution

    |

  13. What is the rate determining step of a reaction?

    Text Solution

    |

  14. The kinetics for the reaction, 2NO+2H2 to N2 + 2H2O is explained by t...

    Text Solution

    |

  15. Write the rate law and order for the following reaction: AB2 +C2 ...

    Text Solution

    |

  16. Define Elementary step in a reaction

    Text Solution

    |

  17. What is the temperature coefficient?

    Text Solution

    |

  18. What are effective collisions ?

    Text Solution

    |

  19. Define threshold energy.

    Text Solution

    |

  20. What is the effect of catalyst on the rate of reaction ?

    Text Solution

    |