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In the graph, slope is (a) inst d R r dt (b) inst d R r d P (c) inst d P r dt (d) inst d P r dt Ans. (c) Sol. Slope ⇒ inst d P r dt
...A… depends upon the change in concentration of reactants or products and the time taken for that change to occur. Here, A is
The correct expression is
The square brackets in the expression Δ[R] = [R]2 – [R]1 are used to express …A… Here, A is
Speed of a reaction can be defined as
The units of rate of reaction are
Rate of a reaction
The rate of reaction is defined as
For a reaction R ⟶ P, the concentration of a reactant changes from 0.05 M to 0.04 M in 30 minutes. What will be the average rate of reaction in minutes?
For the reaction A + 2B ⟶ C, the rate of reaction at a given instant can be represented by (a) d[A] 1 d[B] d[C] dt 2 dt dt
For the reaction. 2 HI ⟶ H2 + I2, the expression [ ] d HI dt represents
In a reaction 2HI ⟶ H2 + I2, the concentration of HI decreases from 0.5 mol L–1 to 0.4 mol L–1 in 10 minutes. What is the overall rate of reaction during this interval?
Consider the reaction, 2N O 4NO O . -> In the reaction NO2 is being formed at the rate of 0.0125 mol L–1 s–1. What is the rate of reaction at this time?
Chemical kinetics plays an important role in
The correct expression for the rate constant for reactions of zero-order is
For a first order reaction, (A) -> product the concentration of A changes from 0.1 M to 0.025 M in40 min. The rate of reaction when the concentration of A is 0.01 M is
In a first order reaction the concentration of reactant decreases from 800 mol/dm3 to 50 mol/dm3 in 2 × 104 sec. The rate constant of reaction in sec–1 is:
In a first order reaction, reactant concentration ‘C’ varies with time ‘t’ as
The half-life period of a first order reaction is
What will be the half-life of the first order reaction for which the value of rate constant is 200 s–1?
For a given reaction half life period was found to be directly proportional to the initial concentration of the reactant. The order is
…A… of the reaction is the time in which the concentration of a reactant is reduced to one half of its initial concentration. Choose the appropriate word to fill ‘A’ from the options given below.
1/2 t for a zero order reaction is …(I)… proportional to the initial concentration of the reactants and …(II)… proportional to the rate constant. Choose the correct words to fill up the blanks (I) and (II) respectivel…
Value of 1/2 t for first order reaction is (a) (b) (c) (d) Ans. (a) Sol. Value of t1/2 for first order reaction is 0.693 k
Expression for the half-life of zero order reaction is given as (a) 1/2 R t 2k (b) 0 1/2 R t 2k (c) 1/2 0.693 t k (d) 1/2 0.301 t k Ans. (b) Sol. 0 1/2 R t 2k For a zero order reaction.