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 Which among the following does not affect the rate of reaction?

Option: 1

Amount of the reactant 


Option: 2

Physical state of the reactant


Option: 3

Enthalpy of reaction 


Option: 4

Size of vessel


Answers (1)

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Rate of reaction depends on concentration of reactants, physical state of the reactants, surface area of the reactants, chance of collision of reactant molecules (temperature, volume & pressure), activation energy (catalyst to lower activation energy) etc.

But it does not depend upon the enthalpy of the reaction. 

 

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Rakesh

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