Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Chemical Kinetics question

2008 · Q100
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Chemistry
  4. /Chemical Kinetics
  5. /2008 · Q100

Chemical Kinetics question

2008 · Q100

NEETChemistryChemical KineticsMCQ+4 / −1
The rate constants k1 and k2 for two different reactions are 1016 ⋅\cdot⋅ e−-−2000/T and 1015 ⋅\cdot⋅ e−-−1000/T, respectively.
The temperature at which k1 = k2 is
  1. A
    2000 K
  2. B
    10002.303K{{1000} \over {2.303}}K2.3031000​K
  3. C
    1000 K
  4. D
    20002.303K{{2000} \over {2.303}}K2.3032000​K
View written solutionFree

Correct answer: B

k1 = 1016 e−2000T{e^{ - {{2000} \over T}}}e−T2000​

k2 = 1015 e−1000T{e^{ - {{1000} \over T}}}e−T1000​

On taking log of both the equations, we get

log⁡k1=16−20002.303T\log {k_1} = 16 - {{2000} \over {2.303T}}logk1​=16−2.303T2000​

log⁡k2=15−10002.303T\log {k_2} = 15 - {{1000} \over {2.303T}}logk2​=15−2.303T1000​

As k1 = k2

16−20002.303T16 - {{2000} \over {2.303T}}16−2.303T2000​ = 15−10002.303T15 - {{1000} \over {2.303T}}15−2.303T1000​

⇒\Rightarrow⇒ T = 10002.303K{{1000} \over {2.303}}K2.3031000​K

PreviousNext

More from Chemical Kinetics

  • The bromination of acetone that occurs in acid solution is represented by this equation. CH3COCH3(aq) + Br2(aq) → CH3COCH2Br(aq) + H+(aq) + Br−(aq) These kinetic data were obtained for given reaction concentrations. Based on these… Includes table2008 · MCQ
  • If 60% of a first order reaction was completed in 60 minutes, 50% of the same reaction would be completed in approximately (log 4 = 0.60, log 5 = 0.69)2007 · MCQ
  • In a first-order reaction A → B, if k is rate constant and initial concentration of the reactant A is 0.5 M, then the half-life is2007 · MCQ
  • The reaction of hydrogen and iodine monochloride is given as : H2(g) + 2ICl(g) → 2HCl(g) + I2(g) This reaction is of first order with respect to H2(g) and ICl(g), following mechanisms were proposed. Mechanism A : H2(g) + 2ICl(g) →…2007 · MCQ
  • Consider the reaction : N2(g) + 3H2(g) → 2NH3(g) The equality relationship between dtd[NH3​]​ and −dtd[H2​]​ is2006 · MCQ
  • For the reaction, 2A + B → 3C + D, which of the following does not express the reaction rate?2006 · MCQ
  • For a first order reaction A → B the reaction rate a reactant concentration of 0.01 M is found to be 2.0 × 10−5 mol L−1 s−1. The half-life period of the reaction is2005 · MCQ
  • The rate of reaction between two reactions A and B decreases by a factor of 4 if the concentration of reactant B is doubled. The order of this reaction with respect to reactant B is2005 · MCQ