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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

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

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प्रश्न

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

पर्याय

  • concentration of catalyst

  • temperature

  • potential energy

  • mol/L of reactants

MCQ
रिकाम्या जागा भरा
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उत्तर

The rate law relates to the rate of a chemical reaction in terms of mol/L of reactants.

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Rate of Reaction and Reactant Concentration
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पाठ 6: Chemical Kinetics - Multiple choice questions

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 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, \[\ce{CH3Br_{(aq)} + OH^{-}_{(aq)} -> CH3OH^{\ominus}_{(aq)} + Br^{\ominus}_{(aq)}}\], 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?


A First order reaction is 50% complete in 69.3 minutes. Time required for 90% completion for the same reaction is _______.


Order of reaction for which unit of rate constant is mol dm–3 s–1 is _______.


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.


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.


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


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 ____________.


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 ____________.


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?


In the reaction, \[\ce{N2 + 3H2 -> 2NH3}\], the rate of disappearance of H2 is 0.02 Mis. The rate of appearance of NH3 is ______.


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


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.


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