NEET UG CHEMISTRY MCQ: CHEMICAL KINETICS

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Analyzing +4 | -1

Which of the following statement is true for the reaction,

{H_2} + B{r_2} \to 2HBr

. The rate law is

\frac{{dx}}{{dt}} = K\left[ {{H_2}} \right]{\left[ {B{r_2}} \right]^{1/2}}

View answer and explanation

Correct option: D

All the above are correct

Option D (All the above are correct) is correct because the rate law indicates a 1.5 order, molecularity is 2, and quadrupling [Br2] doubles the rate.

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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