Related Practice Questions :

For an endothermic reaction, where ΔH represents the enthalpy of the reaction in kJ/mol, the minimum value for the energy of activation will be

1. Less than ΔH

2. Zero

3. More than ΔH

4. Equal to ΔΗ

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How fast the reaction is at 25°C as compared to 0°C. If the activation energy is 65 KJ :-

(1) 2 times

(2) 5 times

(3) 11 times

(4) 16 times

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The activation energy of a reaction is zero. The rate constant of the reaction is :

(1) increases with increase in temperature

(2) decreases with decrease in temperature

(3) decreases with increase in temperature

(4) is nearly independent of temperature

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The rate constant of a first order reaction is 10-3 min-1 at 27°C. The temperature coefficient of this  reaction is 2. The rate constant at 17°C will be :

(1) 10-3 min-1

(2) 5  x 10-4 min-1

(3) 2 x 10-3 min-1

(4) 10-2 min-1

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The activation energy of a reaction can be determined from the slope of which of the following graphs?

(a) In K vs T

(b) In K/T vs T

(c) In K vs 1/T

(d) T/In K vs 1/T

 

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