ABC26PH0948 · For an enzyme-substrate reaction, E+S k-1k1 ES the slope and intercept of plot between 1 / r and 1 /[S] are 10-2 s and 102 M-1 s… · JUNE 2018self-practice
Rate Laws Order
ABC26PH0012 · The concentration of a reactant undergoing decomposition was 0.1, 0.08 and 0.067\,mol\,L-1 after 1.0, 2.0 and 3.0 hr respectively. The… · DEC 2011self-practice
ABC26PH0876 · The concentration of a reactant undergoing decomposition was 0.1, 0.08 and 0.067 mol L-1 after 1.0, 2.0 and 3.0 hr respectively. The order… · DEC 2011self-practice
ABC26PH0652 · A salt mixture (1.0 g) contains 25 wt\% of MgSO4 and 75 wt\% of M2SO4. Aqueous solution of this salt mixture on treating with excess BaCl2… · 2001-2022self-practice
ABC26PH0016 · The half life of a zero order reaction (A P) is given by (k= rate constant ) : · DEC 2011self-practice
ABC26PH0656 · In 200 g of water, 0.01 mole of NaCl and 0.02 mole of sucrose are dissolved. Assuming solution to be ideal, the depression in freezing… · 2001-2022self-practice
ABC26PH0881 · The half-life of a zero order reaction (A P) is given by ( k= rate constant ): · JUNE 2011self-practice
ABC26PH0657 · The half-life of the chemical reaction, A Product, for initial reactant concentrations of 0.1 and 0.4 mol L-1 are 200 and 50 s… · 2001-2022
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 2011self-practice
ABC26PH0663 · The most viscous liquid is · 2001-2022self-practice
ABC26PH0665 · The kinetics of the reaction 2 N2 O5 4 NO2+O2 in liquid bromine medium was measured independently for three different initial concentration… · 2001-2022
ABC26PH0893 · If the concept of half-life is generalized to quarter-life of a first order chemical reaction, it will be equal to · DEC 2012self-practice
ABC26PH0669 · For the reaction: 2 NO+2 H2 700 C N2+2 H2 O (i) Write the expression for the rate of the reaction in terms of the change in concentrations… · 2001-2022self-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 2012self-practice
ABC26PH0672 · The half-life of any zero-order reaction is: · 2001-2022self-practice
ABC26PH0898 · Observe the following statements (I) In the H2-O2 reaction, explosion occurs when the rate of chain branching exceeds that of chain… · JUNE 2013self-practice
ABC26PH0674 · The mechanism of isomerization of cyclobutene (CB) to 1, 3-butadiene (BD) is as follows. arrayl CB + CB k1 CB* + CB \\ CB* + CB k-1 CB + CB… · 2001-2022self-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
ABC26PH0902 · The rate equation for the reaction 2 AB+B2 2 AB2 is given byrate =k[AB] [B2 ] A possible mechanism consistent with this rate law is · JUNE 2013self-practice
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… · 2001-2022self-practice
ABC26PH0026 · According to Arrhenius equation ( k= rate constant and T= temperature) · DEC 2013self-practice
ABC26PH0680 · For a zero order reaction, units of the rate constant is expressed as · 2001-2022self-practice
ABC26PH0905 · According to Arrhenius equation ( k= rate constant and T= temperature) · DEC 2013self-practice
ABC26PH0908 · Examine the following first order consecutive reactions. The rate constant (in s-1 units) for each step is given above the arrow mark… · JUNE 2014self-practice
ABC26PH0685 · Ozone seems to be formed in the atmosphere through the photolysis of diatomic molecule: arrayl O2 [h]k0 2O \\ O + O2 k1 O3 \\ O3 + O k2 2O2… · 2001-2022self-practice
ABC26PH0910 · The fluorescence lifetime of a molecule in a solution is 5 10-9 s. The sum of all the noradiative rate constants ( Sigma knr ) for the… · JUNE 2014self-practice
ABC26PH0029 · For a first order reaction A products, the plot of (([A]t)/([A]0) ) vs time, where [A]0 and [A]t to cocentration at time =0 and t… · DEC 2013
ABC26PH0911 · For a first order reaction A products, the plot of ([A]t[A]0 ) vs time, where [A]0 and [A]t to concentration at time =0 and t respectively… · JUNE 2014self-practice
ABC26PH0687 · The rate constant k for a second order reaction P + Q Products is expressed 10k = 20 - 3000/T, where the concentration is in mol\,lit-1, T… · 2001-2022self-practice
ABC26PH0032 · The rate constant for a reaction A++Bn+1 P is measured in two different aqueous solutions of ionic strengths 0.01\,M and 0.04\,M. If… · DEC 2014
ABC26PH0914 · The rate constant for a reaction A3++Bn+1 P is measured in two different aqueous solutions of ionic strengths 0.01 M and 0.04 M . If K0.04… · DEC 2014self-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 2015self-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 2015self-practice
ABC26PH0039 · Experimentally determined rate law for the chemical reaction, 2NO2F 2NO2+F2 is R=k[NO2F] The rate determining step consistent with the rate… · JUNE 2016
ABC26PH0930 · Experimentally determined rate law for the chemical reaction, 2 NO2 F 2 NO2+F2 is R=k [NO2 F ] The rate determining step consistent with… · JUNE 2016self-practice
ABC26PH0931 · For the chemical reaction in aqueous solution, CH2 ClCOO-+OH- CH2 OHCOO-+Cl- the correct statement is · JUNE 2016self-practice
ABC26PH0932 · If experimentally observed rate constant is greater than the maximum value of rate constant obtained using hard-sphere model of collision… · JUNE 2016self-practice
ABC26PH0040 · Half-life t1/2 for a third order rection 3C products, where C0 is the initial concentration of C, will be · JUNE 2016
ABC26PH0933 · Half-life t1 / 2 for a third order reaction 3C → products, where C0 is the initial concentration of C, will be · JUNE 2016self-practice
ABC26PH0938 · The rate of an acid-catalyzed reaction in aqueous solution follows the rate equation r=k [X+ ] [Y2- ] [H+ ] If k16 and k4 are rate… · DEC 2016self-practice
ABC26PH0946 · Reaction between A and B is carried out for different initial concentrations and the corresponding half-life times are measured. The data… · DEC 2017self-practice
ABC26PH0951 · If the half-life of a reaction is inversely proportional to the square of the concentration of the reactant, the order of the reaction is · JUNE 2019self-practice
ABC26PH0952 · The gas phase decomposition of A at 1000K follows two decomposition paths. The maximum theoretical percentage yield of P at 1000K is · JUNE 2019self-practice
Steady State Approximation
ABC26PH0877 · The overall rate of the following complex reaction, arrayl 2 A k1k2 A2 (fast equilibrium) \\ A+B k2 C (fast equilibrium) \\ A2+C k3 P+2 A… · DEC 2011self-practice
ABC26PH0676 · For the reaction, H2(g) + Br2(g) 2HBr(g) the following mechanism has been proposed. arrayl Initiation: Br2 + M ki Br + Br + M \\… · 2001-2022self-practice
ABC26PH0679 · The following initial rate data were obtained for the reaction 2NO(g) + O2(g) 2NO2(g) (i) What is the rate law for this reaction? (ii) One… · 2001-2022self-practice
ABC26PH0042 · A reaction goes through the following elementary steps Assuming that steady state approximation can be applied to C, on doubling the… · DEC 2016self-practice
ABC26PH0936 · A reaction goes through the following elementary steps arrayl A+B [k-1]k1 2 C (fast) \\ A+C k2 D (slow) array Assuming that steady state… · DEC 2016self-practice
ABC26PH0944 · For a sequence of consecutive reactions, A k1 I k2 P, the concentration of I would be, by steady state approximation. · DEC 2017self-practice