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Understanding chemical kinetics - class-XII
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Fill up the following with suitable terms.
(i) Activation energy $=$ Threshold energy $-$ _______.
(ii) Half-life period of zero order reaction $=$ ________.
(iii) Average rate of reaction $=$ _______.
(iv) Instantaneous rate of reaction $=$ ______.
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A
Average kinetic energy of reactants, $\dfrac {a}{2k}, \dfrac {\triangle [A]}{\triangle t}, \dfrac {dx}{dt}$
💡 Explanation:
a) Activation energy = Threshold energy$-$ the Average kinetic energy of molecules(by definition)
b) half-life of a zero order reaction = ${ t } _{ \frac { 1 }{ 2 } } =\frac { a }{ 2k } $
c) Average rate of reaction = $\dfrac {\displaystyle \text{ Total change concentration reactants }}{ \displaystyle \text{Total time taken} }$ = $\dfrac { \triangle \left[ A \right] }{ \triangle t }$
d) Instantaneous rate of reaction =$ \dfrac { \displaystyle \text {Instantaneous change in concentration} }{\displaystyle \text { Instantaneous time} } $=$\dfrac { dx }{ dt } $