Chemical Kinetics questions
1373 published questions with worked solutions.
- Under the same reaction conditions, initial concentration of 1.386 mol dm^ -3 of a substance becomes half in 40 seconds and 20...
- The rate of a reaction doubles when its temperature changes from 300 K to 310 K. Activation energy of such a reaction will be :...
- Pre-exponential factors of two different reactions of same order are identical. Let activation energy of first reaction exceeds...
- Decomposition of A is a first order reaction at T(K) and is given by A(g) B(g) + C(g). In a closed 1 L vessel, 1 bar A(g) is...
- The temperature at which the rate constants of the given below two gaseous reactions become equal is _____ K. (Nearest integer)....
- Correct statements regarding Arrhenius equation among the following are : (A) Factor e^ -Ea/RT corresponds to fraction of...
- Consider A k_1 B and C k_2 D are two reactions. If the rate constant (k_1) of the A B reaction can be expressed by the following...
- Observe the following reactions at T(K) I. A → products. II. 5Br-(aq)+BrO3-(aq)+6H+(aq) → 3Br2(aq)+3H2O(l) Both the reactions are...
- At 27^ C in presence of a catalyst, activation energy of a reaction is lowered by 10 kJ mol ^ -1 . The logarithm ratio of k(...
- An organic compound undergoes first order decomposition. The time taken for decomposition to ( 1 8 )^ th and ( 1 10 )^ th of its...
- A B (first reaction) C D (second reaction) Consider the above two first-order reactions. The rate constant for first reaction at...
- A → B The molecule A changes into its isomeric form B by following a first order kinetics at a temperature of 1000 K. If the...
- For the thermal decomposition of N_2O_5(g) at constant volume, the following table can be formed, for the reaction mentioned...
- Consider a complex reaction taking place in three steps with rate constants k_1, k_2 and k_3 respectively. The overall rate...
- Consider the elementary reaction A(g) + B(g) → C(g) + D(g). If the volume of reaction mixture is suddenly reduced to 1 3 of its...
- The reaction A_2 + B_2 2AB follows the mechanism A_2 k_ -1 k_1 A + A (fast) A + B_2 k_2 AB + B (slow) A + B AB (fast) The overall...
- Drug X becomes ineffective after 50% decomposition. The original concentration of drug in a bottle was 16 mg/mL which becomes 4...
- Consider the following statements related to temperature dependence of rate constants. Identify the correct statements. A. The...
- In a reaction A + B → C, initial concentrations of A and B are related as [A]_0 = 8[B]_0. The half lives of A and B are 10 min...
- Rate law for a reaction between A and B is given by r = k[A]^n[B]^m. If concentration of A is doubled and concentration of B is...
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