Chemical Kinetics
107 questions in this chapter, page 2 of 3.
Study loop for Chemical Kinetics
1. Practise the PYQsPrevious-year questions, with answers
Chemical Kinetics – General
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
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
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
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
ABC26PH0048 · Substance 'A' is exposed to 600 nm, 100 W light source for 6626 s, with 50% of the incident light being absorbed. 'A' decomposes according… · DEC 2019
ABC26PH1037 · For a reaction, raising the temperature from 200 K to 300 K results in the increase of rate constant by a factor of 2. The activation… · DEC 2019 self-practice
ABC26PH1038 · The rate constant for the reaction A2B4O → AB4 + AO, is described as, log k = 14.1 - 10000 K/T the activation energy (in kJ mol-1) is… · JUNE 2021 self-practice
ABC26PH1039 · The rate of decomposition of a gas is 10 mM s-1 when 10% is reacted and it is 5 mM s-1 when 40% is reacted. The order of the reaction is: · JUNE 2021 self-practice
ABC26PH1040 · For a person weighing 70 kg the minimal volume (in mL) of a fatal dose of a compound with LD50 = 80 mg kg-1, and density = 1.45 g mL-1 is · JUNE 2021 self-practice
Complex Reactions
ABC26PH0949 · Difference between activation energies of the reverse and forward steps of a reversible reaction is 9.212 RT. If the pre-exponential factor… · JUNE 2018 self-practice
Enzyme Kinetics
ABC26PH0883 · For an enzyme catalyzed reaction, a Lineweaver-Burk plot gave the following data: slope = 40 s, intercept = 4 (mmol dm-3 s-1)-1. If the… · JUNE 2011 self-practice
ABC26PH0684 · An enzyme following Michaelis-Menten kinetics was found to have highest activity at 37°C and pH 7.0. If the maximum velocity Vmax for this… · 2001-2022 self-practice
ABC26PH0909 · In the Lineweaver-Burk plot of (initial rate)-1 vs. (initial substrate concentration)-1 for an enzyme catalysed reaction following… · JUNE 2014 self-practice
ABC26PH0912 · For an enzyme-substrate reaction, a plot between 1/v and 1/[S0] yields a slope of 40 s. If the enzyme concentration is 2.5 μM, then the… · DEC 2014 self-practice
ABC26PH0044 · The slope and intercept obtained from (1/Rate) against (1/substrate concentration) of an enzyme catalyzed reaction are 300 and 2 × 105… · DEC 2017 self-practice
ABC26PH0945 · The slope and intercept obtained from (1/Rate) against (1/substrate concentration) of an enzyme catalyzed reaction are 300 and 2 × 105… · DEC 2017 self-practice
Rate Laws Order
ABC26PH0016 · The half life of a zero order reaction (A → P) is given by (k = rate constant): · DEC 2011 self-practice
ABC26PH0882 · The decomposition of gaseous acetaldehyde at T(K) follows second order kinetics. The half-life of this reaction is 400 s when the initial… · JUNE 2011 self-practice
ABC26PH0021 · The decomposition of NH3 on Mo surface follows Langmuir-Hinshelwood mechanism. The decomposition was carried out at low pressures. The… · DEC 2012
ABC26PH0895 · The decomposition of NH3 on Mo surface follows Langmuir-Hinshelwood mechanism. The decomposition was carried out at low pressures. The… · DEC 2012 self-practice
ABC26PH0025 · The rate equation for the reaction 2AB + B2 → 2AB2 is given by rate = k[AB][B2] A possible mechanism consistent with this rate law is · DEC 2012
ABC26PH0678 · For the reaction A + B → Z, the concentration of Z at time t is given by [Z] = [A]t=0(1 - e-kt) + [Z]t=0, where k is the rate constant. The… · 2001-2022 self-practice
ABC26PH0026 · According to Arrhenius equation (k = rate constant and T = temperature) · DEC 2013 self-practice
ABC26PH0680 · For a zero order reaction, units of the rate constant is expressed as · 2001-2022 self-practice
ABC26PH0905 · According to Arrhenius equation (k = rate constant and T = temperature) · DEC 2013 self-practice
ABC26PH0927 · The first order rate constant for a unimolecular gas phase reaction A → products that follows Lindemann mechanism is 2.0 s-1 at pA = 1 atm… · DEC 2015 self-practice
ABC26PH0929 · If the rates of a reaction are R1 and R2 at concentrations C1 and C2 of a reactant respectively, the order of reaction, 'n' (assuming that… · DEC 2015 self-practice
ABC26PH0039 · Experimentally determined rate law for the chemical reaction, 2NO2F → 2NO2 + F2 is R = k[NO2F] The rate determining step consistent with… · JUNE 2016
ABC26PH0930 · Experimentally determined rate law for the chemical reaction, 2NO2F → 2NO2 + F2 is R = k[NO2F] The rate determining step consistent with… · JUNE 2016 self-practice