Dependence of Rate on Concentration, Rate Expression and Rate Constant, Order of a Reaction, Molecularity of a Reaction
Shaalaa.com | Chemical Kinetics part 5 (Factors impacting rate of reaction)
Series 1: playing of 13
A reaction is second order in A and first order in B.
(i) Write the differential rate equation.
(ii) How is the rate affected on increasing the concentration of A three times?
(iii) How is the rate affected when the concentrations of both A and B are doubled?
For the hydrolysis of methyl acetate in aqueous solution, the following results were obtained :
|[CH3COOCH3] / mol L–1||0.60||0.30||0.15|
(i) Show that it follows pseudo first order reaction, as the concentration of water remains constant.
(ii) Calculate the average rate of reaction between the time interval 30 to 60 seconds.
(Given log 2 = 0.3010, log 4 = 0.6021)
For a chemical reaction R → P, the variation in the concentration (R) vs. time (t) plot is given as:
(i) Predict the order of the reaction.
(ii) What is the slope of the curve ?
(iii) Write the unit of rate constant for this reaction.
For a reaction A + B ⟶ P, the rate is given by
Rate = k [A] [B]2
What is the overall order of reaction if A is present in large excess?
For the first order thermal decomposition reaction, the following data were obtained:
Time / sec Totalpressure / atm
Calculate the rate constant
(Given: log 2 = 0.301, log3 = 0.4771, log 4 = 0.6021)
In a first order reaction x → y, 40% of the given sample of compound remains unreacted in 45 minutes. Calculate rate constant of the reaction.