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The rate constant of a first order reaction depends on

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Important Questions on Chemical Kinetics

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For the decomposition of N2O5( g) it is given that- 

2 N2O5( g)4NO2( g)+O2( g) 

activation energy =Ea

N2O5( g)2NO2( g)+12O2( g)

activation energy = Ea' then

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The energy of activation of a forward reaction is 50 kcal. The energy of activation of its backward reaction is:
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An exothermic reaction XY has an activation energy 30 KJ mol-1. If energy change (ΔE) during the reaction is -20 KJ, then the activation energy for the reverse reaction is:
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Which of the following plot is in accordance with the arrhenius equation : -
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The rate of reaction increases by the increase of temperature because:

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For a certain gaseous reaction rise of temperature from 25°C to 35°C doubles the rate of reaction. What is the value of activation energy : -
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The activation energy for the forward reaction XY is 60 kJ mol-1 and ΔH is -20 kJ mol-1. The activation energy for the backward reaction YX is:
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For producing the effective collisions, the colliding molecules must possess: