Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Chemical Kinetics question

2023 · Q98
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Chemistry
  4. /Chemical Kinetics
  5. /2023 · Q98

Chemical Kinetics question

2023 · Q98

NEETChemistryChemical KineticsMCQ+4 / −1

For a reaction 3 A→2 B3 \mathrm{~A} \rightarrow 2 \mathrm{~B}3 A→2 B

The average rate of appearance of B\mathrm{B}B is given by Δ[B]Δt\frac{\Delta[B]}{\Delta t}ΔtΔ[B]​. The correct relation between the average rate of appearance of B\mathrm{B}B with the average rate of disappearance of A is given in option :

  1. A
    −Δ[A]Δt\frac{-\Delta[\mathrm{A}]}{\Delta \mathrm{t}}Δt−Δ[A]​
  2. B
    −3Δ[A]2Δt\frac{-3 \Delta[\mathrm{A}]}{2 \Delta t}2Δt−3Δ[A]​
  3. C
    −2Δ[A]3Δt\frac{-2 \Delta[\mathrm{A}]}{3 \Delta \mathrm{t}}3Δt−2Δ[A]​
  4. D
    Δ[A]Δt\frac{\Delta[\mathrm{A}]}{\Delta t}ΔtΔ[A]​
View written solutionFree

Correct answer: C

$$ \begin{aligned} & 3 \mathrm{~A} \rightarrow 2 \mathrm{~B} \\ & \mathrm{r}=-\frac{1}{3} \frac{\Delta[\mathrm{A}]}{\Delta \mathrm{t}}=+\frac{1}{2} \frac{\Delta[\mathrm{B}]}{\Delta \mathrm{t}} \\ &+\frac{\Delta[\mathrm{B}]}{\Delta \mathrm{t}}=-\frac{2}{3} \frac{\Delta[\mathrm{A}]}{\Delta \mathrm{t}} \end{aligned}$$

PreviousNext

More from Chemical Kinetics

  • For a certain reaction, the rate =k[A]2[ B], when the initial concentration of A is tripled keeping concentration of B constant, the initial rate would2023 · MCQ
  • Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : A reaction can have zero activation energy. Reason R : The minimum extra amount of energy absorbed by reactant molecules so…2023 · MCQ
  • For a chemical reaction 4A + 3B → 6C + 9D Rate of formation of C is 6 × 10−2 mol L−1 s−1 and rate of disappearance of A is 4 × 10−2 mol L−1 s−1. The rate of reaction and amount of B consumed in interval of 10…2022 · MCQ
  • The given graph is a representation of kinetics of a reaction The y and x axes for zero and first order reactions, respectively are Includes diagram2022 · MCQ
  • For a first order reaction A → Products, initial concentration of A is 0.1 M, which becomes 0.001 M after 5 minutes. Rate constant for the reaction in min−1 is2022 · MCQ
  • For a reaction, A → B, enthalpy of reaction is −4.2 kJ mol−1 and enthalpy of activation is 9.6 kJ mol−1. The correct potential energy profile for the reaction is shown in option.2021 · MCQ
  • The slope of Arrhenius plot (lnkv/sT1​) of first order reactino is −5 × 103K. The value of Ea of the reaction is. Choose the correct option for your answer. [Given R = 8.314 JK−1mol−1]2021 · MCQ
  • The rate constant for a first order reaction is 4.606 × 10-3 s-1. The time required to reduce 2.0 g of the reactant to 0.2 g is :2020 · MCQ