Chemical Kinetics
153 questions in this chapter, page 2 of 4.
Study loop for Chemical Kinetics
1. Practise the PYQsPrevious-year questions, with answers
Chemical Kinetics – General
ABC26PH0020 · Using cuvettes of 0.5 cm path length, a 10-4 M solution of a chromophore shows 50% transmittance at certain wave length. The molar… · DEC 2011
ABC26PH0348 · For the parallel first order reaction shown below the value of k1 is 1 × 10-4 s-1. If the reaction starts from X, the ratio of the… · 2005-2021
ABC26PH0892 · Using cuvettes of 0.5 cm path length, a 10-4 M solution of a chromophore shows 50% transmittance at certain wave length. The molar… · JUNE 2012 self-practice
ABC26PH0349 · The half-life (t1 / 2) for the hydrolysis of an ester varies with the initial concentration of the reactant ([E]0) as follows: The oder of… · 2005-2021
ABC26PH0668 · An aqueous solution of hemoglobin has a molar absorptivity value of 18,600 L mol-1 cm-1 for an absorbance value of 0.1 at 540 nm (Given… · 2001-2022
ABC26PH0670 · For a particular reaction at constant temperature, a plot of inverse of reactant concentration (1/([A])) versus time is a straight line… · 2001-2022 self-practice
ABC26PH0353 · The specific rate constant of decomposition of compound is represented by ln k = 5.0 - 12000/T The activation energy of decomposition for… · 2005-2021
ABC26PH0897 · A radioisotope 41Ar initially decays at the rate of 34,500 disintegrations/minute, but decay rate falls to 21,500 disintegrations/minute… · JUNE 2013 self-practice
ABC26PH0673 · The percent transmittance of a solution having absorbance (optical density) 1.0 is · 2001-2022
ABC26PH0899 · The concentrations of a species A undergoing the reaction A → P is 1.0, 0.5, 0.33, 0.25 mol dm-3 at t = 0, 1, 2 and 3 seconds… · JUNE 2013 self-practice
ABC26PH0023 · In the Lindemann mechanism of unimolecular reactions, the observed order at low concentration is: · DEC 2012 self-practice
ABC26PH0356 · For a given first order reaction, the reactant reduces to 1/4th its initial value in 10 minutes. The rate constant of the reaction is: · 2005-2021
ABC26PH0900 · In the Lindemann mechanism of unimolecular reactions, the observed order at low concentration is: · JUNE 2013 self-practice
ABC26PH0903 · A 0.1 M solution of compound A shows 50% transmittance when a cell of 1 cm width is used at lambda nm. Another 0.1 M solution of compound B… · JUNE 2013 self-practice
ABC26PH0360 · For a reaction involving two steps given below First step: G ⇌ 2H Second step: G + H → P assume that the first step attains equilibrium… · 2005-2021
ABC26PH0904 · A chemical reaction involving nonlinear molecule + nonlinear molecule ⇌ nonlinear activated complex. The number of vibrational degrees of… · JUNE 2013 self-practice
ABC26PH0361 · Consider the reaction, H2+C2H4 → C2H6 The molecular diamesters of H2 and C2H4 are 1.8 Å and 3.6 Å respectively. The pre-exponential factor… · 2005-2021
ABC26PH0028 · In the reaction between NO and H2 the following data are obtained Experiment I: PH2 constant Experiment II : PNO = constant The orders with… · DEC 2013 self-practice
ABC26PH0907 · In the reaction between NO and H2 the following data are obtained Experiment I: P_H2 constant Experiment II : PNO= constant The orders with… · DEC 2013 self-practice
ABC26PH0364 · For a reaction of the type X k2k1⇌ Y, the correct rate expression is ([X]0. and [X] corresponds to the concen tration of X at time t=0 and… · 2005-2021
ABC26PH0683 · For a reaction with rate equation -dC/dt = kC2, C0 and C are the concentrations of the reactant at time 0 and t respectively. If 10 minutes… · 2001-2022 self-practice
ABC26PH0686 · From the reaction aA → products, the plot of 1/([A]) versus time (t) gives a straight line. Order of the reaction is · 2001-2022 self-practice
ABC26PH0370 · The rate constant of a reaction is 1.25 × 10-4 mol L-1 s-1. If the initial concentration of the reactant is 0.250 mol L-1, the total time… · 2005-2021
ABC26PH0371 · The dependence of rate constant k on a temperature T (in K) of a reaction is given by the expression ln k = [(-5000 K)/T] + 10 The… · 2005-2021
ABC26PH0372 · The major product obtained in the following reaction is · 2005-2021
ABC26PH0916 · Which of the following will result in deviation from Beer's law ? 1. Change in refractive index or medium. 2. Dissociation of analyte on… · DEC 2014 self-practice
ABC26PH0373 · Under physiological conditions, the conversion of CO2 to bicarbonate ion by carbonic anhydrase enzyme (MW = 30,000 g mol-1) has a turnover… · 2005-2021
ABC26PH0034 · For a reaction, 2A + B → 3Z, if the rate of consumption of A is 2 × 10-4 mol dm-3 s-1 the rate of formation of Z (in mol dm-3 s-1) will be · JUNE 2015 self-practice
ABC26PH0374 · According to Eyring state theory for a bimolecular reaction, the activated complex has · 2005-2021
ABC26PH0918 · For a reaction, 2A + B → 3Z, if the rate of consumption of A is 2 × 10-4 mol dm-3s-1 the rate of formation of Z (in mol dm-3s-1) will be · JUNE 2015 self-practice
ABC26PH0919 · For a given ionic strength, (I) rate of reaction is given by /(k0) = -4 × 0.51 I1/2. Which of the following reactions follows the above… · JUNE 2015 self-practice
ABC26PH0920 · The intensity of a light beam decreases by 50% when it passes through a sample of 1.0 cm path length. The percentage of transmission of the… · JUNE 2015 self-practice
ABC26PH0036 · Considering the following parameters with reference to the fluorescence of a solution: 1. Molar absorptivity of fluorescent molecule. 2… · JUNE 2015
ABC26PH0378 · Consider the following two parallel irreversible first order reactions at temperature T, where k1 and k2 are the rate constants and their… · 2005-2021
ABC26PH0921 · Considering the following parameters with reference to the fluorescence of a solution: 1. Molar absorptivity of fluorescent molecule. 2… · JUNE 2015 self-practice
ABC26PH0379 · For an enzyme catalyzed reaction, the plot of inverse of initial rate against inverse of initial substrate concentration is linear with… · 2005-2021 self-practice
ABC26PH0037 · In a photochemical reaction, radicals formed according to the equation C4H10 + h nu ⇌ 2 C2H5 C2H5 + C2H5 k2 C2H6 + C2H4 If I is the… · JUNE 2015
ABC26PH0380 · In a reaction, reactant X is converted to products Y and Z consecutively with rate constants 6.0 × 10-2 min-1 and 9.0 × 10-3 min-1… · 2005-2021 self-practice
ABC26PH0923 · In a photochemical reaction, radicals formed according to the equation C4H10 + h nu ⇌ 2C2H5; C2H5 + C2H5 k2 C2H6 + C2H4 If I is the… · JUNE 2015 self-practice
ABC26PH0381 · For the ring opening reaction of cyclopropane to propene at 25°C, the pre-exponential factor is 4.3 × 1015 s-1. The entropy of activation… · 2005-2021 self-practice
ABC26PH0382 · The rate constants for the decomposition of a molecule in the presence of oxygen are 0.237 × 10-4 L mol-1 s-1 at 0°C and 2.64 × 10-4 L… · 2005-2021 self-practice
ABC26PH0041 · According to the transition state theory, the plot with slope equal to (Delta H)/R is · DEC 2016
ABC26PH0935 · According to the transition state theory, the plot with slope equal to (Delta H≠)/R is · DEC 2016 self-practice
ABC26PH0940 · In kinetic study of a chemical reaction, slopes are drawn at different times in the plot of concentration of reactants versus time. The… · JUNE 2017 self-practice
ABC26PH0941 · Photochemical decomposition of HI takes place with the following mechanism HI + h nu (Ia) → H + I; H + HI k1 H2 + I; I + I + M k2 I2 + M… · JUNE 2017 self-practice
ABC26PH0950 · For a second-order reaction, the straight line among the following plots is · JUNE 2018 self-practice
ABC26PH1032 · If the rate constant for a base catalyzed ester hydrolysis reaction is 0.20 L mol-1s-1, half-life (in s) of the ester (Given… · DEC 2019 self-practice
ABC26PH0047 · The oxidation of NO to NO2 occurs via the mechanism given below. 2NO k-1k1⇌ N2O2; N2O2 + O2 k2 2NO2 (d[NO2])/dt in the presence of large… · DEC 2019