CHEMICAL KINETICS

Arrhenius equation is

• k = Ae^Ea/RT

• k = Ae^-Ea/RT

• k = Ae^RT/Ea

• k = Ae^-RT/Ea

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If we plot log k Vs 1/T, by Arrhenius equation, the slope is

• -Ea/R

• +Ea/R

• -Ea/2.303R

• +Ea/2.303R

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A catalyst increases the rate of a chemical reaction by

• increasing the activation energy

• decreasing the activation energy

• reacting with reactants

• reacting with products

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If the rate of the reaction is equal to the rate constant, then the order of the reaction is

• 3

• 0

• 1

• 2

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The time of half change of a first order reaction is _______initial concentration.

• proportional to

• inversely proportional to

• independent of

• equal to

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The unit of rate and rate constant are same for ______order reaction

• zero

• one

• two

• three

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For an elementary reaction 2A + B →C + D, the molecularity is

• zero

• one

• two

• three

The rate law of the reaction 2N₂O₅ → 2NO₂ + O₂ is

• r = k[N₂O₅ ]

• r = k[N₂O₅ ]²

• r = k[N₂O₅ ]0

• r = k[NO₂]⁴ [O₂]

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