Chemical Kinetics questions
1373 published questions with worked solutions.
- The rate constant of a reaction increases by five times on increase in temperature from 27°C to 52°C. The value of activation...
- For the reaction, aA + bB cC + dD, the plot of log k vs 1 T is given below. The temperature at which the rate constant is 10^ -4...
- For a chemical reaction A B, it was found that concentration of B is increased by 0.2 mol L^ -1 in30 min. The average rate of the...
- The following data was obtained for chemical reaction given below at 975 K. 2NO(g)+H_2(g) N_2(g)+2H_2O(g) [NO] [H2] Rate: (A) 8...
- If the activation energy of a reaction is 80.9 kJ mol^ -1 , the fraction of molecules at 700 K, having enough energy to react so...
- An exothermic reaction X Y has activation energy 30 kJ mol^ -1 . If energy change during the reaction is –20 kJ, then the...
- For a first order reaction, the time required for completion of 90% reaction is 'x' times the half life of the reaction. The...
- The half-life for the decomposition of gaseous compound A is 240 s when the gaseous pressure was 500 torr initially. When the...
- At 345 K, the half life for the decomposition of a sample of a gaseous compound initially at 55.5 kPa was 340 s. When the...
- For a given chemical reaction _ 1 A + _ 2 B _ 3 C + _ 4 D, concentration of C changes from 10 m mol dm^ -3 to 20 m mol dm^ -3 in...
- At 30°C, the half life for the decomposition of AB_ 2 is 200 s and is independent of the initial concentration of AB_ 2 . The...
- For a reaction A 2B + C the half lives are 100 s and 50 s when the concentration of reactant A is 0.5 and 1.0 mol L^ -1...
- Catalyst A reduces the activation energy for a reaction by 10 kJ mol^ -1 at 300 K. The ratio of rate constants,...
- A flask is filled with equal moles of A and B. The half lives of A and B are 100 s and 50 s respectively and are independent of...
- For the reaction A , the rate constant k(in s^ -1 ) is given by _ 10 k=20.35- 2.47 10^3 T The energy of activation in kJ mol^ -1...
- The graph which represents the following reaction is : (C_6H_5)_3C-Cl [Pyridine] OH^- (C_6H_5)_3C-OH
- A The above reaction is of zero order. Half life of this reaction is 50 min. The time taken for the concentration of A to reduce...
- A and B are two substances undergoing radioactive decay in a container. The half life of A is 15 min and that of B is 5 min. If...
- The concentration of R in the reaction R P was measured as a function of time and the following data is obtained: array...
- For the first order reaction 2N_2O_5(g) 4NO_2(g) + O_2(g)
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