मराठी
महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

For the reaction 2A + B → C, rate of disappearance of A 0.076 mol s –1. What is the rate of formation of C? What is the rate of consumption of B? What is the rate of the overall reaction?

Advertisements
Advertisements

प्रश्न

For the reaction 2A + B → C, rate of disappearance of A 0.076 mol s –1.

  1. What is the rate of formation of C?
  2. What is the rate of consumption of B?
  3. What is the rate of the overall reaction?
संख्यात्मक
Advertisements

उत्तर

Given: Rate of disappearance of A = `- ("d"["A"])/"dt"` = 0.076 mol s-1

To find:

  1. Rate of formation of C
  2. Rate of consumption of B
  3. Rate of the overall reaction

Calculation:

Rate of reaction = `- 1/2 ("d"["A"])/"dt" = - ("d"["B"])/"dt" = ("d"["C"])/"dt"`

Rate of formation of C = `("d"["C"])/"dt" = - 1/2 ("d"["A"])/"dt"`

`= 1/2 xx 0.076` mol s-1

= 0.038 mol s-1

Rate of consumption of B = `- ("d"["B"])/"dt" = - 1/2 ("d"["A"])/"dt"`

`= 1/2 xx 0.076` mol s-1 

= 0.038 mol s-1 

Rate of reaction = `("d"["C"])/"dt"` = 0.038 mol s-1 

  1. Rate of formation of C= 0.038 mol s-1 
  2. Rate of consumption of B = 0.038 mol s-1 
  3. Rate of the overall reaction = 0.038 mol s-1 
shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 6: Chemical Kinetics - Short answer questions (Type- II)

संबंधित प्रश्‍न

Choose the most correct option.

The order of the reaction for which the units of the rate constant are mol dm-3 s-1 is _______.


Choose the most correct option.

The rate constant for the reaction \[\ce{2N2O5_{(g)} -> 2N2O4_{(g)} + O2_{(g)}}\] is `4.98 xx 10^-4 "s"^-1`. The order of reaction is _____________.


The time required for 90% completion of a certain first-order reaction is t. The time required for 99.9% completion will be _________.


Choose the most correct option.

Slope of the graph ln[A]t versus t for first-order reaction is _________.


Choose the most correct option.

Rate law for the reaction, \[\ce{2NO + Cl2 -> 2NOCl}\] is rate = k[NO2]2[Cl2]. Thus of k would increase with _____________.


Answer the following in one or two sentences.

For the reaction, \[\ce{CH3Br_{(aq)} + OH^{-}_{(aq)} -> CH3OH^{\ominus}_{(aq)} + Br^{\ominus}_{(aq)}}\], rate law is rate = \[\ce{k[CH3Br][OH^\ominus]}\]

How does reaction rate changes if \[\ce{[OH^\ominus]}\] is decreased by a factor of 5?


Answer the following in brief.

For the reaction 2A + B → products, find the rate law from the following data.

[A]/M [B]/M rate/M s-1
0.3 0.05 0.15
0.6 0.05 0.30
0.6 0.2 1.20

Answer the following in one or two sentences.

For the reaction,

\[\ce{CH3Br_{(aq)} + OH^-_{ (aq)} -> CH3OH^-_{ (aq)} + Br^-_{ (aq)}}\], rate law is rate = k`["CH"_3"Br"]["OH"^-]`

What is the change in rate if concentrations of both reactants are doubled?


The rate law relates to the rate of a chemical reaction in terms of _______.


Define order of reaction with suitable examples.


The rate constant of a first order reaction whose half-life is 480 seconds, is ____________.


For the non-stoichiometric reaction

\[\ce{2A + B -> C + D}\], the following kinetic data were obtained in three separate experiments, all at 298 K.

Initial concentration
(A)
Initial concentration
(B)
Initial rate of formation of C
(mol dm−3 s−1)
0.1 M 0.1 M 1.2 × 10−3
0.1 M 0.2 M 1.2 × 10−3
0.2 M 0.1 M 2.4 × 10−3

The rate law for the formation of C is:


For the reaction, \[\ce{N2(g) + 3H2(g) -> 2NH3(g); \Delta H}\] is equal to ______.


For a chemical reaction rate law is, rate = k[A]2[B]. If [A] is doubled at constant [B], the rate of reaction ______.


The rate law for the reaction \[\ce{A + B + C -> Product}\] is expressed as Rate = k[A]2 [B]1 [C]0. What is the overall order of the reaction?


Consider the reaction \[\ce{2A + 2B -> C + 2D}\], if concentration of A is doubled at constant [B], rate increases by a factor 4. If concentration B is doubled at constant [A] the rate is doubled. Rate law of the reaction is ____________.


What is the molecularity and order of the following reaction if rate law is, rate = k[O3][O] respectively.

\[\ce{O_{3(g)} + O_{(g)} -> 2O_{2(g)}}\]


In the reaction \[\ce{2SO_{2_{(g)}} O_{2_{(g)}} -> 2SO_{3_{(g)}}}\], the rate of disappearance of SO2 is 1.28 × 10-5 M/s. What is the rate of appearance of SO3?


The correct order of raaii of F, F-, O and O2- is ______.


Write the rate law for the following reaction:

A reaction that is zero order in A and second order in B.


For a chemical reaction A → 7 products, the rate of reaction doubles when the concentration of A is increased by a factor 4. The order of the reaction is ______.


For the reaction A + B → P.

If [B] is doubled at constant [A], the rate of reaction doubled. If [A] is triple and [B] is doubled, the rate of reaction increases by a factor of 6. Calculate the rate law equation.


The rate constant for a first-order reaction whose half-life is 480 seconds is ______.


`t_(1/4)` can be taken as the time taken for the concentration of a reactant to drop to `3/4` of its initial value. If the rate constant for a first order reaction is k, the `t_(1/4)` can be written as ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×