NEET UG CHEMISTRY MCQ: CHEMICAL KINETICS

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Fraction of molecule having energy greater or equal to activation energy

E_a

at temperature

T K

is given by

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Correct option: B

e^{\frac{-E_a}{R T}}

Option B (

e^{\frac{-E_a}{R T}}

) is correct because it represents the fraction of molecules possessing energy equal to or greater than the activation energy at a given temperature T, according to the Boltzmann distribution.

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If the reaction rate at a given temperature becomes slower then

\frac{1}{{{{\left[ A \right]}^2}}}

vs times are a straight line. Order of reaction is The rate constant

\left( {k'} \right)

of one of the reaction is found to be double that of the rate constant

\left( {k''} \right)

of another reaction. Then the relationship between the corresponding activation energies of the two reaction

\left( {{{E'}_a}\;\mathrm{and}\;{{E''}_a}} \right)

can be represented as Acid hydrolysis of sucrose is a Order of radioactive disintegration reaction is Temperature coefficient of a reaction is 2. When temperature is increased from

30^\circ C\;to\;100^\circ C

, rate of the reaction increases by