Chemical Kinetics questions
1373 published questions with worked solutions.
- For A_2 + B_2 2AB, Ea for forward and backward reaction are 180 and 200 kJ mol⁻¹ respectively. If catalyst lowers Ea for both...
- In a first order decomposition reaction, the time taken for the decomposition of reactant to one fourth and one eights of its...
- Half life of zero order reaction A → product is 1 hour, when initial concentration of reactant is 2.0 mol L^ -1 . The time...
- A(g) B(g) + C(g) is a first order reaction. Time: t, ∞ P_ system : p_t, p_ The reaction was started with reactant A only. Which...
- For the non-stoichiometric reaction 2A + B C + D , the following kinetic data were obtained in three separate experiments all at...
- Decomposition of H_2O_2 follows a first order reaction. In fifty minutes the concentration of H_2O_2 decreases from 0.5 to 0.125...
- Two reactions, R_1 and R_2 have identical pre-exponential factors. Activation energy of R_1 exceeds that of R_2 by 10 kJ mol^ -1...
- At 518°C, the rate of decomposition of sample of gaseous acetaldehyde, initially at a pressure of 363 Torr, was 1.00 Torr s^ -1...
- If 50 % of a reaction occurs in 100 seconds and 75 % of the reaction occurs in 200 seconds, the order of this reaction is -
- For the reaction 2A + B → C, the values of initial rate at different reactant concentrations are given in the table below. The...
- Match the catalysts (Column I) with products (Column II). List-I: (A) V_2O_5 (B) TiCl_4/Al(Me)_3 (C) PdCl_2 (D) Iron Oxide...
- For the reaction of H_2 with I_2, the rate constant is 2.5 10^ -4 dm^3 mol^ -1 s^ -1 at 327°C and 1.0 dm^3 mol^ -1 at 527°C. The...
- For a first order reaction, A → P, t_ 1/2 (half-life) is 10 days. The time required for 1 4 ^ th conversion of A (in days) is –...
- For the reaction, 2A + B → products, when the concentrations of A and B both were doubled, the rate of the reaction increased...
- The following results were obtained during kinetic studies of the reaction: 2A + B → Products | Experiment | [A] (in mol L^ -1 )...
- In the following reaction; xA → yB: _ 10 [- d[A] dt ] = _ 10 [ d[B] dt ] + 0.3010. 'A' and 'B' respectively can be:
- Decomposition of X exhibits a rate constant of 0.05 μg/year. How many years are required for the decomposition of 5 μg of X into...
- The reaction 2X → B is a zeroth order reaction. If the initial concentration of X is 0.2 M, the half-life is 6 h. When the...
- If a reaction follows the Arrhenius equation, the plot ln k vs 1 RT gives straight line with a gradient (−y) unit. The energy...
- For an elementary chemical reaction, A_2 k_ -1 k_1 2A, the expression for d[A] dt is:
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