KCET 2018 | Chemical Kinetics Question 25 | Chemistry

For the reaction, $2 \mathrm{SO}_2+\mathrm{O}_2 \rightleftharpoons 2 \mathrm{SO}_3$, the rate of disappearance of $\mathrm{O}_2$ is $2 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$. The rate of appearance of $\mathrm{SO}_3$ is

$2 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$

$4 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$

$1 \times 10^{-1} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$

$6 \times 10^{-4} \mathrm{molLL}^{-1} \mathrm{~s}^{-1}$

KCET 2018

MCQ (Single Correct Answer)

-0

The temperature coefficient of a reaction is 2. When the temperature is increased from $30^{\circ} \mathrm{C}$ to $90^{\circ} \mathrm{C}$, the rate of saction is increased by

150 times

410 times

72 times

64 times

KCET 2018

MCQ (Single Correct Answer)

-0

The value of rate constant of a pseudo first order reaction

depends only on temperature

depends on the concentration of reactants present in small amounts

depends on the concentration of reactants present in excess

is independent of the concentration of reactants

KCET 2017

MCQ (Single Correct Answer)

-0

For a reaction $\frac{1}{2} A \rightarrow 2 B$ rate of disappearance of $A$ is related to rate of appearance of $B$ by the expression

$\frac{-d[A]}{d t}=\frac{1}{2} \frac{d[B]}{d t}$

$\frac{-d[A]}{d t}=4 \frac{d[B]}{d t}$

$\frac{-d[A]}{d t}=\frac{1}{4} \frac{d[B]}{d t}$

$\frac{-d[A]}{d t}=\frac{d[B]}{d t}$

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