Home
Class 12
CHEMISTRY
The rate constant of a first order react...

The rate constant of a first order reaction is `0.0051"min"^(-1)` . If the initial concentration of the reactant is 0.2M , find the concentration of the reactant after 2h.

A

0.2303

B

2.303

C

0.693

D

0.01

Text Solution

Verified by Experts

The correct Answer is:
A
`K = 2.303/t log a/(a-x)`
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    NARAYNA|Exercise EXERCISE -2 (H.W) (HALF LIFE)|13 Videos

  • CHEMICAL KINETICS

    NARAYNA|Exercise EXERCISE -2 (H.W) COLLISION THEORY|7 Videos

  • CHEMICAL KINETICS

    NARAYNA|Exercise EXERCISE -2 (H.W) (RATE OF REACTION & FACTORS)|19 Videos

  • CARBOXYLIC ACID

    NARAYNA|Exercise All Questions|288 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    NARAYNA|Exercise ASSERTION & REASON TYPE QUESTIONS|10 Videos

Similar Questions

Explore conceptually related problems

Half life of a first order reaction is 4s and the initial concentration of the reactant is 0.12 M. The concentration of the reactant left after 16 s is

The rate constant for a first order reaction is 7.0xx10^(-4) s^(-1) . If initial concentration of reactant is 0.080 M, what is the half life of reaction ?

The rate constant for a first order reaction is 7.5 xx 10^(-4) s^(-1) . If initial concentration of reactant is 0.080 M , what is the half life of reaction ?

The specific rate constant for a first order reaction is 1 times 10^–3 sec^–1 . If the initial concentration of the reactant is 0.1 mole/lt, the rate of reaction mol l^–1 sec^–1 is:

The rate constant for a first order reaction was found to be 0.082 min^(-1) . If initial concentration of reactant is 0.15M , how long would it take: (a) to reduce the concentration of A to 0.03 M ? (b) to reduce the concentration of A by 0.03 M ?

The specific reaction rate constant for a first order reaction is 1xx10^(-2)s^(-1) . If the initial concentration is 1 M , find the initial rate . What is the reaction rate after two minutes ?

NARAYNA-CHEMICAL KINETICS -EXERCISE -2 (H.W) (ORDER OF REACTION)
  1. Rate expression for Xa + Yb to products is Rate =K[A]^(m)[B]^(n). Uni...

    Text Solution

    |

  2. A first order reaction was commenced with 0.2 M solution of the reacta...

    Text Solution

    |

  3. The experiment data for the reaction 2NO(g) + Cl(2)(g) to 2NOCl(g) a...

    Text Solution

    |

  4. The reaction 2A+Bto product follow the mechanism :- 2AhArrA(2)("fast...

    Text Solution

    |

  5. Diazonium salt decomposes as C(6)H(5)N(2)^(+)Cl^(-) rarr C(6)H(5)Cl ...

    Text Solution

    |

  6. Using the data given below the order and rate constant for the reactio...

    Text Solution

    |

  7. Calculate the activation energy of a reaction whose reaction rate at 3...

    Text Solution

    |

  8. The rate constant of a first order reaction is 0.0051"min"^(-1) . If ...

    Text Solution

    |

  9. Half-life is independent on concentration of A. After 10 minutes volum...

    Text Solution

    |

  10. The time for half-life period of a certain reaction, A rarr products i...

    Text Solution

    |

  11. The equilibrium SO(2)Cl(2)(g) hArr SO(2)(g) +Cl(2)(g) is attained ...

    Text Solution

    |

  12. For a reaction (d x)/(d t) = K[H^(+)]^(n). If pH of reaction medium ch...

    Text Solution

    |

  13. For the reaction of I, II and III orders, k(1) = k(2) = k(3) when conc...

    Text Solution

    |

  14. 50 " mL of " pure and dry O2 was subjected to silent electric discharg...

    Text Solution

    |

  15. At some temperature, the rate constant for the reaction of the type ...

    Text Solution

    |

  16. For the first order reaction A(g) rarr 2B(g) + C(g), the initial presu...

    Text Solution

    |