Chemical Kinetics questions
1373 published questions with worked solutions.
- r = k[A] for a reaction, 50% of A is decomposed in 120 minutes. The time taken for 90% decomposition of A is ________ minutes.
- Integrated rate law equation for a first order gas phase reaction is given by (where P_i is initial pressure and P_t is total...
- A and B decompose via first order kinetics with half-lives 54.0 min and 18.0 min respectively. Starting from an equimolar non...
- The decomposition of formic acid on gold surface follows first order kinetics. If the rate constant at 300 K is 1.0 10^ -3 s^ -1...
- The reaction 2A+B_2 2AB is an elementary reaction. For a certain quantity of reactants, if the volume of the reaction vessel is...
- For a certain first order reaction 32% of the reactant is left after 570s. The rate constant of this reaction is —— 10^ -3 s^ -1...
- A reaction has a half life of 1 min. The time required for 99.9% completion of the reaction is ______ min. (Round off to the...
- 2NO(g)+Cl_2(g) 2NOCl(s). This reaction was studied at –10°C and the following data was obtained. [NO]₀ and [Cl2]₀ are the initial...
- PCl_5(g) PCl_3(g)+Cl_2(g). In the above first order reaction the concentration of PCl_5 reduces from initial concentration 50 mol...
- The inactivation rate of a viral preparation is proportional to the amount of virus. In the first minute after preparation, 10%...
- N_2O_5(g) 2NO_2(g)+ 1 2 O_2(g) In the above first order reaction the initial concentration of N_2O_5 is 2.40 10^ -2 mol L^ -1 at...
- Sucrose hydrolyses in acid solution into glucose and fructose following first order rate law with a half-life of 3.33 h at 25°C....
- Gaseous cyclobutene isomerizes to butadiene in a first order process which has a 'k' value of 3.3 10^ -4 s^ -1 at 153°C. The time...
- For a first order reaction A → B, the reaction rate at reactant concentration of 0.01 M is found to be 2.0 x 10^ -5 mol L^ -1 s^...
- The rate of reaction between two reactants A and B decreases by a factor of 4, if the concentration of reactant B is doubled. The...
- For a reaction of order n, the unit of the rate constant is :
- For the first order reaction A 2B, 1 mole of reactant A gives 0.2 moles of B after 100 minutes. The half life of the reaction is...
- The reaction that occurs in a breath analyser, a device used to determine the alcohol level in a person's blood stream is...
- The first order rate constant for the decomposition of CaCO_3 at 700 K is 6.36 10^ -3 s^ -1 and activation energy is 209 kJ mol^...
- For a first order reaction, the ratio of the time for 75% completion of a reaction to the time for 50% completion is_______....
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