629 questions from a source that prints this span of years rather than the year of each question. Each opens with its answer and explanation.
ABC26PH0352 · The overall activation energy (E_A, overall ) for the formation of P can expressed as · Concentration B B – General
ABC26PH0353 · The specific rate constant of decomposition of compound is represented by k = 5.0 - 12000/T The activation energy of decomposition for this… · Concentration B B – General
ABC26PH0354 · Statement for Linked Answer Q. 23 and Q. 24: In the mu vs T diagram for different phases of the same substance at one atmospheric pressure… · Concentration B B – General
ABC26PH0355 · Statement for Linked Answer Q. 23 and Q. 24: In the mu vs T diagram for different phases of the same substance at one atmospheric pressure… · Concentration B B – General
ABC26PH0356 · For a given first order reaction, the reactant reduces to 1 / 4^ th its initial value in 10 minutes. The rate constant of the reaction is: · Concentration B B – General
ABC26PH0357 · According to Ehrenfest classification of phase transitions, the above diagram refers to · Concentration B B – General
ABC26PH0358 · Assuming k3 [O3 ] k2 [O2 ][M], the activation of the overall reaction is · Concentration B B – General
ABC26PH0359 · Under the steady state approximation for the intermediates, the rate of decomposition of ozone, -d [O3 ]dt, is · Concentration B B – General
ABC26PH0360 · For a reaction involving two steps given below First step: G 2 H Second step: G+H P assume that the first step attains equilibrium rapidly… · Concentration B B – General
ABC26PH0361 · Consider the reaction, H2+C2H4 C2H6 The molecular diamesters of H2 and C2H4 are 1.8\, and 3.6\, respectively. The pre-exponential factor in… · Concentration B B – General
ABC26PH0362 · Consider the reaction, 2 C(s)+O2(g) 2 CO(g) at equilibrium, The equilibrium can be shifted towards the forward direction by · Concentration B B – General
ABC26PH0363 · (being typed) · Concentration B B – General
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… · Concentration B B – General
ABC26PH0365 · The temperature dependence of partition are as follows: arrayll qtranslation T3/2 & qvibration T0 \\ qrotation T\,(linear molecule) &… · Concentration B B – General
ABC26PH0366 · For a gas phase unimolecular reaction at tempeature 298 K , with a pre-exponential factor of 2.17 1013 s-1, the entropy of activation (… · Concentration B B – General
ABC26PH0367 · For an elementary bimolecular gas phase reaction, activation energy is 5.5 kJ mol-1. Enthalpy of activation, in kJ mol-1, at 300 K is ____… · Concentration B B – General
ABC26PH0368 · The reaction, A B, is first order in both the directions. The forward and reverse rate constants are 4.2 10-4 s-1 and 1.04 10-3 s-1… · Concentration B B – General
ABC26PH0369 · For the following reaction, A+B k-1=104\,s-1k1=105\,L\,mol-1s-1 I k2=10\,s-1 P if steady state approximation can be applied on [I], the… · Concentration B B – General
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 (in… · Concentration B B – General
ABC26PH0371 · The dependence of rate constant k on a temperature T (in K ) of a reaction is given by the expression k=[(-5000 K) / T]+10 The activation… · Concentration B B – General
ABC26PH0372 · The major product obtained in the following reaction is · Concentration B B – General
ABC26PH0373 · Under physiological conditions, the conversion of CO2 to bicarbonate ion by carbonic anhydrase enzyme (MW =30,000 g mol-1 ) has a turnover… · Concentration B B – General
ABC26PH0374 · According to Eyring state theory for a bimolecular reaction, the activated complex has · Concentration B B – General
ABC26PH0375 · The rate constant of a first order reaction, X Y, is 1.6 10-1 s-1 at 300 K . Given that the activation energy of the reaction is 28 kJ… · Concentration B B – General
ABC26PH0376 · Second-order are constant for the reaction between [Co (NH3 )5 X ]n+ (n=3 . for X=NH3 and H2 O; n = 2 for · Concentration B B – General
ABC26PH0377 · ( Delta S=-12.67) 47(2.59) 48. (KM=0.075 mol L-1 ) · Concentration B B – General
ABC26PH0378 · Consider the following two parallel irreversible first order reactions at temperature T, where k1 and k2 are the rate constants and their… · Concentration B B – General
ABC26PH0379 · For an enzyme catalyzed reaction, the plot of inverse of initial rate against inverse of initial substrate concentration is linear with… · Concentration B B – General
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… · Concentration B B – General
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 (in… · Concentration B B – General
ABC26PH0382 · The rate constants for the decomposition of a molecule in the presence of oxygen are 0.237 10-4\,L\,mol-1s-1 at 0 and 2.64… · Concentration B B – General
ABC26PH0383 · In the reversible chamical reaction taking place under standard condition at 298 K and 1 atm in a Daniel cell, Zn |Zn2+(aq) | |Cu2+(aq) |… · Electrochemistry – General
ABC26PH0384 · If standard emf of the cell, Cu|Cu2+(aq)\|[Cu(NH3)4]2+, aq.NH3|Cu is 0.35, then stability constant of the formation cupric amine complex is · Nernst Cells
ABC26PH0385 · Aqueous solution of sodium chloride (=0.015 ) at 298 K is in equilibrium with a water vapour pressure (in torr) of · Electrochemistry – General
ABC26PH0386 · Average value of enthalpy of vaporisation (in kJ / mol ) of water between 363 and 373 K is · Electrochemistry – General
ABC26PH0387 · Given the standard potential for the following half-cell reaction at 298 K arrayll Cu+(aq)+e- Cu(s) & E0=0.52\,V \\ Cu2+(aq)+e- Cu+(aq) &… · Nernst Cells
ABC26PH0388 · For a redox reaction, Cd2++2 e- Cd, the (Ep )_ anodic observed in cyclic voltametry at hanging mercury drop electrode is -650 mV vs. SCE… · Electrochemistry – General
ABC26PH0389 · Given that E0 (Fe3+, Fe )=-0.04 V and E0 (Fe2+, Fe )=-0.44 V, the value of E0 (Fe3+, Fe2+ ) is: · Electrochemistry – General
ABC26PH0390 · In the mixture obtained by mixing 25.0 mL 1.2 10-3 M MnCl2 and 35.0 mL of 6.0 10-4 M KCl solution, the concentrations (M) of Mn2+, K+and… · Electrochemistry – General
ABC26PH0391 · The activity (M) of Mn2+ ion in the above solution is · Electrochemistry – General
ABC26PH0392 · According to the Debye-Huckel limiting law, the mean activity coefficient of 5 10-4\,mol\,kg-1 aqueous solution of CaCl2 at 25 is (the… · Debye Huckel
ABC26PH0393 · According to the Debye-Hückel limiting law, if the concentration of a dilute aqueous solution of KCl is increased 4 fold, the value of in… · Debye Huckel
ABC26PH0394 · The standard reduction potentials at 298 K for single electrodes are given below: From this we can infer that · Nernst Cells
ABC26PH0395 · For a 1 molal aqueous NaCl solution, the mean ionic activity coefficient ( )and the Deby-Huckel Limiting Law constant (A) are related as · Electrochemistry – General
ABC26PH0396 · For the concentration cell M |M+ (aq, 0.01 mol dm-3 ) \| M+ (aq, 0.1 mol dm-3 ) | M the EMF (E) of the cell at a temperature (T) equals · Nernst Cells
ABC26PH0397 · At 298 K, the EMF of the cell pt H2(1\,bar) H+(solution) \| Cl- Hg2Cl2Hg is 0.7530 V. The standard potential of the calomel electrode is… · Nernst Cells
ABC26PH0398 · For the following reaction 2MnO4-+5H2C2O4+6H+ 2Mn2++8H2O+10CO2 E0(MnO4-/Mn2+)=+1.51\,V and E0(CO2/H2C2O4)=-0.49\,V. At 298 K, the… · Electrochemistry – General
ABC26PH0399 · A sparingly soluble electrolyte M2 X ionizes as M2 X 2 M++X2-. The solubility product (Ksp ), molal solubility (S) and molal activity… · Electrochemistry – General
ABC26PH0400 · For the determination of solubility product (KSP) of Fe(OH)3, the appropriate cell representation and its emf are, respectively. · Conductance
ABC26PH0401 · The value of e (KSP ) for Fe(OH)3 at 298 K is · Electrochemistry – General