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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Choose the most correct option. Rate law for the reaction, 2NO+ClX2⟶2NOCl is rate = k[NO2]2[Cl2]. Thus of k would increase with _____________.

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प्रश्न

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 _____________.

पर्याय

  • increase in temperature

  • increase of concentration of NO

  • increase of concentration of Cl2

  • increase of concentrations of both Cl2 and NO

MCQ
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उत्तर

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

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पाठ 6: Chemical Kinetics - Exercises [पृष्ठ १३५]

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बालभारती Chemistry [English] Standard 12 Maharashtra State Board
पाठ 6 Chemical Kinetics
Exercises | Q 1. ix. | पृष्ठ १३५

संबंधित प्रश्‍न

Choose the most correct option.

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


Choose the most correct option.

The reaction, \[\ce{3ClO- -> ClO^-3 + 2Cl-}\] occurs in two steps, 

(i) \[\ce{2ClO- -> ClO^-2}\]

(ii) \[\ce{ClO^-2 + ClO- -> ClO^-_3 + Cl-}\] 

The reaction intermediate is _______.


The elementary reaction \[\ce{O3_{(g)} + O_{(g)} -> 2O2_{(g)}}\] is ______.


Choose the most correct option.

For an endothermic reaction, X ⇌ Y. If Ef is the activation energy of the forward reaction and Er that for the reverse reaction, which of the following is correct?


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?


For the reaction \[\ce{2NO_{(g)} + 2H_{2(g)} -> N_{2(g)} + 2H2O_{(g)}}\],

The rate law is, rate = k[NO]2 [H2].

What is the overall order of reaction?


Write four key points about order of reaction.


A reaction occurs in the following steps:

Step 1: \[\ce{NO_{2(g)} + F_2 -> NO2F_{(g)} + F_{(g)}}\] (slow)

Step 2: \[\ce{F_{(g)} + NO_{2(g)} -> NO_2F}\] (Fast)

  1. Write the equation of overall reaction.
  2. Write the rate law.
  3. Identify reaction intermediate.

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?

In a first-order reaction A → B, 60% of a given sample of a compound decomposes in 45 mins. What is the half-life of reaction? Also, write the rate law equation for the above first-order reaction.


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:


A gaseous hypothetical chemical equation \[\ce{2A ⇌ 4B + C}\] is carried out in a closed vessel. The concentration of B is found to increase by 5 × 10−3 mol dm−3 in 10 second. The rate of ____________.


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


For a hypothetical reaction \[\ce{A + B -> C}\], it is found that doubling the concentration of A increases the rate by 8 times and doubling the concentration of B increases the rate by 4 times. The overall order of the reaction is ____________.


The order of the reaction occurring by following mechanism should be:

(i) \[\ce{A2 + B2 -> AB2 + A (slow)}\]

(ii) \[\ce{A + B2 -> AB2 (fast)}\]


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 ____________.


The rate law for the reaction \[\ce{2NO_{(g)} + O2_{(g)} -> 2NO2_{(g)}}\] is rate = k[NO]2 [O2] , then which among the following statement is correct?


What is the order of reaction for decomposition of gaseous acetaldehyde?


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?


Which of the following statement is not true for a reaction having rate law r = k[H2][I2]?


Write the rate law for the following reaction:

A reaction that is second order in NO and first order in Br2.


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 the reaction,

2N2O5(g) → 2N2O4(g) + O2(g) is 4.98 × 10-4 s-1.

What is the order of reaction?


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