Home
Class 12
CHEMISTRY
For a reaction(1)/(2)A to 2B rate of dis...

For a reaction`(1)/(2)A to 2B` rate of disappearance of A is related to rate of apperarance of B by the expression

A

`(-d[A])/(dt)=(1)/(2)(d[B])/(dt)`

B

`(-d[A])/(dt)=4(d[B])/(dt)`

C

`(-d[A])/(dt)=(1)/(4)(d[B])/(dt)`

D

`(-d[A])/(dt)=(d[B])/(dt)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    AAKASH SERIES|Exercise Objective Exercise - 2|93 Videos
  • CHEMICAL KINETICS

    AAKASH SERIES|Exercise Objective Exercise - 3 (Previous NEET/AIPMT Questions)|32 Videos
  • CHEMICAL KINETICS

    AAKASH SERIES|Exercise Subjective Exercise-4 (Numerical Problems)|7 Videos
  • CHEMICAL KINETCS

    AAKASH SERIES|Exercise EXERCISE - 3.2|45 Videos
  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise Additional Practice Exercise|54 Videos

Similar Questions

Explore conceptually related problems

In the following reaction, how is the rate of appearance of the underline product related to the rate of disappearance of the underlined reactant? BrO_(3)^(-)(aq)+ul(5Br^(-))(aq)+6H^(+)(aq)toul(3Br_(2))_((1))+3H_(2)O_((1))

The instantaneous rate of an elementary chamical reactkon aA+bBhArr cC+dD can be given by rate =K_(f)[A]^(a)[B]^(b)-K_(b)[C]^(c)[D]^(d) where K_(f) and K_(b) are rate constants for forward and backward reactions respectively for the reversible reaction. If the reaction is an irreversible one, the rate is expressed as, rate =K[A]^(a)[B]^(b) where K is rate contant for the given irreversible rate of disappearance of A is a/b times the rate of disappearance of B. The variation of rate constant K with temperature is expressed in terms of Arrhenius equation: K=Ae^(-E_(a)//RT) whereas the ratio (K_(f))/(K_(b)) is expressed in terms of van't Hoff isochore: (K_(f))/(K_(b))=Ae^(-DeltaH//RT) , where E_(a) and DeltaH are energy of activation and heat of reaction respectively. For a gaseous phase -I order reaction A(g)toB(g)+2C(g) (rate constant K=10^(-2)"time"^(-1) ) in a closed vesel of 2 litre containing 5 mole of A(g) at 27^(@)C which of the following is correct?

The instantaneous rate of an elementary chamical reactkon aA+bBhArr cC+dD can be given by rate =K_(f)[A]^(a)[B]^(b)-K_(b)[C]^(c)[D]^(d) where K_(f) and K_(b) are rate constants for forward and backward reactions respectively for the reversible reaction. If the reaction is an irreversible one, the rate is expressed as, rate =K[A]^(a)[B]^(b) where K is rate contant for the given irreversible rate of disappearance of A is a/b times the rate of disappearance of B. The variation of rate constant K with temperature is expressed in terms of Arrhenius equation: K=Ae^(-E_(a)//RT) whereas the ratio (K_(f))/(K_(b)) is expressed in terms of van't Hoff isochore: (K_(f))/(K_(b))=Ae^(-DeltaH//RT) , where E_(a) and DeltaH are energy of activation and heat of reaction respectively. For an elementary reaction aAto product, the graph plotted log([-d[A]])/(dt) vs log[A]_(t) gives a straight line with intercept equal to 0.6 and showing an angle of 45^(@) then

The instantaneous rate of an elementary chamical reactkon aA+bBhArr cC+dD can be given by rate =K_(f)[A]^(a)[B]^(b)-K_(b)[C]^(c)[D]^(d) where K_(f) and K_(b) are rate constants for forward and backward reactions respectively for the reversible reaction. If the reaction is an irreversible one, the rate is expressed as, rate =K[A]^(a)[B]^(b) where K is rate contant for the given irreversible rate of disappearance of A is a/b times the rate of disappearance of B. The variation of rate constant K with temperature is expressed in terms of Arrhenius equation: K=Ae^(-E_(a)//RT) whereas the ratio (K_(f))/(K_(b)) is expressed in terms of van't Hoff isochore: (K_(f))/(K_(b))=Ae^(-DeltaH//RT) , where E_(a) and DeltaH are energy of activation and heat of reaction respectively. The variation of rate constant K and (K_(f))/(K_(b)) with temperature shows the following effects: For endothrmic reaction when T increases then K increases and (K_(f))/(K_(b)) also increases. (ii) For endothemic reaction when T decreases then K decreases and (K_(f))/(K_(b)) also decreases. (iii) For exothermic when T increases then K and (K_(f))/(K_(b)) both increases. (iv) For exothermic reaction when T decreases then K increases and (K_(f))/(K_(b)) decrease. (v) For exothermic reaction when T increases thenK and (K_(f))/(K_(b)) both decrease.

In the reaction BrO_(3).^(-)(aq)+5Br^(-)(aq)+6H^(+) to 3Br_(2)(l)+3H_(2)O(l) The rate of appearance of bromine (Br_(2)) is related to rate of disappearance of bromide ions as following

underset((g))(A)+1/2underset((g))(B)tounderset((g))(2C)+1/2underset((g))(D) the rate of disappearance of B is x. What is the rate of appeance of C?

In the reaction, 2A+Bto2C+D , the rate of disappearance of 'A' is 2.6xx10^(-2)"M-S"^(-1) . Then the rate of disappearance of B and the rate of appearance of C and D are respectively

A_((g))+1/2B_((g))to2C+1/2D_((g)) The rate of disappearance of B is x. What is the rate of appearance of C?

For N_(2)+3H_(2)to2NH_(3) rates of disappearance of N_(2) and H_(2) and rate of appearance of NH_(3) respectively, are a,b and c then

AAKASH SERIES-CHEMICAL KINETICS-Objective Exercise - 1
  1. Rate constant of a reaction can be expressed by Arrhenius equation as ...

    Text Solution

    |

  2. For N(2)O(5) (In "CC"l(4))to2NO(2)+1/2O(2),K=6xx10^(-4)s^(-1) at 350 K...

    Text Solution

    |

  3. For a reaction(1)/(2)A to 2B rate of disappearance of A is related to ...

    Text Solution

    |

  4. SO(2) reacts with O(2) as follows 2SO(2) +O(2)to2SO(3), the rate of di...

    Text Solution

    |

  5. The minimum energy required for molecules to enter into chemical react...

    Text Solution

    |

  6. For a reversible reaction, A hArr B, which one of the following statem...

    Text Solution

    |

  7. In a reaction, threshold energy is equal to

    Text Solution

    |

  8. The value of activation energy for a chemical reaction primarily depen...

    Text Solution

    |

  9. Wrong statement among the following is

    Text Solution

    |

  10. The rate of a reaction triples when temperature changes from 20^(@)C t...

    Text Solution

    |

  11. The temperature dependence on rate constant (k) of a chemical reaction...

    Text Solution

    |

  12. For the reaction A+BhArrC+D, the forward reaction is exothermic. The a...

    Text Solution

    |

  13. Collision theory satisfactorily explains

    Text Solution

    |

  14. According to collision theory of reaction rates, the activation energy...

    Text Solution

    |

  15. Increase in the concentration of the reactants leads to the change in

    Text Solution

    |

  16. The population of activated molecules can be increased by A) increas...

    Text Solution

    |

  17. Consider an endothermic reaction XtoY with the activation energies E(b...

    Text Solution

    |

  18. An endothermic reactio AtoB ha s an activation energy as kKJ"mol"^(-1)...

    Text Solution

    |

  19. Which of the following expkains the increase of reaction rate by a cat...

    Text Solution

    |

  20. The plot of log k vs 1/T helps to calculate

    Text Solution

    |