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A first order reaction has very high val...

A first order reaction has very high value of activation energy.

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The chemical reactions in which the reactants require high amount of activation energy are generally

A colliison between reactant molecules must occur with a certain minimum energy before it is effective in yielding Product molecules. This minimum energy is called activation energy E_(a) Large the value of activation energy, smaller the value of rate constant k . Larger is the value of activation energy, greater is the effect of temperature rise on rate constant k . E_(f) = Activation energy of forward reaction E_(b) = Activation energy of backward reaction Delta H = E_(f) - E_(b) E_(f) = threshold energy The activation eneries for forward and backward reactions in a chemical reaction are 30.5 and 45.4 kJ mol^(-1) respectively. The reaction is

Which adsorption has high energy of activation?

CENGAGE CHEMISTRY-CHEMICAL KINETICS-Exercises True/False
  1. Negative catalyst stop chemical reactions.

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  2. Catalyiss does not alter state of chemical equilibrium.

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  3. A first order reaction has very high value of activation energy.

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  4. The molecularity of a complex reaction is always greater than the orde...

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  5. For a zero order reaction, The rate becomes double when the order of t...

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  6. For a zero order reaction, the half-life periof is independent of the ...

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  7. x g of a radioactive substance will be decomposed to 7//8x g in 40 s i...

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  8. For a first order reaction, the half-life periof is 0.263 k.

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  9. The sum of powers to which of the concentration terms are raised in th...

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  10. The difference between the energy maximum along a reaction path and th...

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  11. The graph between log k versus 1//T is a straight line.

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  12. The slope of the tangent at a point on the curve of concentration of a...

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  13. A poistive catalyst increases the activation energy of the reaction.

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  14. The slope of straight line in a plot of log.[A] versus time for a firs...

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  15. The rate of reaction increases with increase in activation energy.

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  16. The average rate and instantaneous rate are the same.

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  17. Longer the reaction life time, faster is the reaction.

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  18. A mixture of reactants may be thermodynamically unstable but kinetical...

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  19. The rate constant of a specific reaction is independent of the concent...

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  20. The order of reaction can never be zero.

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