Chemistry Question Bank

The unit of rate constant for a zero-order reaction is

The rate law for a reaction between the substances P and Q is given by rate a b k P Q On doubling the concentration of P and reducing the concentration of Q to one-half, the ratio of the new rate to the earlier rate…

Statement I The rate law may not depend on the concentration of every reactants. Statements II With increase in temperature, the rate of reaction increases. Choose the correct option regarding above statements.

The conversion of molecules x to y follows second order kinetics. If concentration of x is increased to three times how will it affect the rate of formation of y ?

Which of the following statement(s) is/are true? I.Rate law is an experimental fact while law of mass action is a theoretical proposal. II.Rate law is more informative than law of mass action for the development mecha…

For the reaction A + B ⟶ C + D, doubling the concentration of both the reactants increases the reaction rate by 8 times and doubling the initial concentration of only B simply doubles the reaction rate. The rate law f…

In the reaction 2 A + B ⟶ Products, the order w.r.t. A is found to be one and w.r.t. B equal to 2. Concentration of A is doubled and that of B is halved, the rate of reaction will be

For the gaseous reaction 2A + B ⟶ C + D, the rate is given by k [A] [B]. The volume of the container containing the reaction mixture is suddenly reduced to one fourth of its original volume. with respect to the origin…

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

Select the rate law that corresponds to the data shown for the following reaction A B C -> Expt. (A) (B) Initial rate 0.012 0.035 0.10 0.024 0.070 0.80 0.024 0.035 0.10 0.012 0.070 0.80

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

During the kinetic study of the reaction, 2A B C D -> , following results were obtained: Run [A]/mol L–1 [B]/mol L–1 Initial rate of formation of D/mol L–1 min–1 I 0.1 0.1 6.0 10 x II 0.3 0.2 7.2 10 x III 0.3 0.4 2.…

For an endothermic reaction, energy of activation is Ea and enthalpy of reaction of H (both of these in kJ/mol). Minimum value of Ea will be. (AIPMT 2010)

For the reaction, N2 + 3H2 -> 2NH3, d NH dt = 2 x 10–4 mol L–1 s–1, the value of d H dt would be: (AIPMT 2009)

In the reaction -> aq aq l l BrO Br H Br H O The rate of appearance of bromine (Br2) is related to rate of disappearance of bromide ions as following: (AIPMT 2009)

Half life period of a first-order reaction is 1386 seconds. The specific rate constant of the reaction is: (AIPMT 2009) (a) 0.5 10 s x (b) 0.5 10 s x (c) 5.0 10 s x (d) 5.0 10 s x