2024-05-10T14:01:33+03:00[Europe/Moscow] en true <p>verify that suggested reaction mechanism is consistent w/ observed kinetics</p>, <p>predict order of rxn from given reaction mechanism </p>, <p>calculating initial rate using conc data</p>, <p>half-life of 1st order reaction is independent of conc</p>, <p>use half-life of 1st order reaction in calculation</p>, <p>calculate rate constant using initial rates method</p>, <p>devise suitable experiment technique for studying rate of reaction from given info</p>, <p>explain in terms of freq of collisions, effect of conc changes on rate of rxn</p>, <p>what is meant by activation energy wrt Boltzmann distribution</p>, <p>explain in terms of Boltzmann distribution &amp; collision freq, effect of temp change on rate constant, hence on rate of rxn</p>, <p>explain that when catalyst present reaction has diff reaction mechanism, ie one of lower Ea giving larger rate constant </p>, <p>interpret catalytic effect on rate constant in terms of boltzmann distribution</p>, <p>outline diff modes of action of homogenous, heterozygous catalysis including;</p><p>haber process</p><p> catalytic removal of oxides of nitrogen in exhaust gases from car engines</p><p>catalytic role of atmospheric oxides of nitrogen in oxidation of atmospheric sulfur dioxide</p><p>catalytic role of fe2+ in I-/S2O82- reaction</p>, <p>describe enzymes as biological catalysts which have specific activity</p>, <p>explain r/s b/w [substrate] &amp; rate of enzyme-catalysed reaction in biochemical systems</p>, <p>define rate of reaction</p>, <p>define order of reaction</p>, <p>define rate constant </p>, <p>define half-life of reaction</p>, <p>define rate-determining step</p>, <p>define activation energy</p>, <p>define rate equation</p>, <p>how to deduce order of reaction by initial rates method</p>, <p>how to find unit of rate constant, k</p>, <p>how to determine order of reaction from conc-time graph?</p> flashcards
H2 Chemistry 6 - Reaction Kinetics

H2 Chemistry 6 - Reaction Kinetics

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  • verify that suggested reaction mechanism is consistent w/ observed kinetics

    g

  • predict order of rxn from given reaction mechanism

    v

  • calculating initial rate using conc data

    v

  • half-life of 1st order reaction is independent of conc

    r

  • use half-life of 1st order reaction in calculation

    r

  • calculate rate constant using initial rates method

    d

  • devise suitable experiment technique for studying rate of reaction from given info

    g

  • explain in terms of freq of collisions, effect of conc changes on rate of rxn

    r

  • what is meant by activation energy wrt Boltzmann distribution

    f

  • explain in terms of Boltzmann distribution & collision freq, effect of temp change on rate constant, hence on rate of rxn

    r

  • explain that when catalyst present reaction has diff reaction mechanism, ie one of lower Ea giving larger rate constant

    f

  • interpret catalytic effect on rate constant in terms of boltzmann distribution

    c

  • outline diff modes of action of homogenous, heterozygous catalysis including;

    haber process

    catalytic removal of oxides of nitrogen in exhaust gases from car engines

    catalytic role of atmospheric oxides of nitrogen in oxidation of atmospheric sulfur dioxide

    catalytic role of fe2+ in I-/S2O82- reaction

    d

  • describe enzymes as biological catalysts which have specific activity

    d

  • explain r/s b/w [substrate] & rate of enzyme-catalysed reaction in biochemical systems

    d

  • define rate of reaction

    change in conc of reactant/product per unit time

  • define order of reaction

    power to which conc of reactant is raised to in rate equation

  • define rate constant

    k, constant of proportionality in rate equation

  • define half-life of reaction

    t1/2, time taken for [reactant] to decrease to 1/2 of initial value

  • define rate-determining step

    slowest step in reaction mechanism, rate eqn obtained from rds

  • define activation energy

    Ea, minimum amount of energy required for effective collision resulting in reaction

  • define rate equation

    mathematical equation that defines rate as the product of rate constant & conc. of reactants raised to appropriate powers

  • how to deduce order of reaction by initial rates method

    compare initial rates of 2 or more experiments for known initial concentrations by:

    1. inspection method

    - e.g. compare expt 1 & 2 where [A], [B] constant, doubling [C] doubles rate.

    rate is proportional [C]

    2. calculation

    - rate 2/rate 1 = rate eqn 2/rate eqn 1 to find unknown

  • how to find unit of rate constant, k

    unit of k = unit of rate/(unit of conc)n; n=overall order

  • how to determine order of reaction from conc-time graph?

    zero order reaction - straight line passing through origin w/ +ve gradient

    first order reaction - consistent t1/2 obtained, can start @ initial conc

    second order reaction - inconsistent t1/2