VITEEE 2024 | Chemical Kinetics Question 1 | Chemistry

The activation energy for a reaction is $9.0 \mathrm{~K} \mathrm{cal} \mathrm{mol}^{-1}$. The increase in the rate constant when its temperature is increased from 298 K to 308 K is

$10 \%$

$100 \%$

$50 \%$

$63 \%$

VITEEE 2024

MCQ (Single Correct Answer)

-0

$A(g) \longrightarrow B(g)$ is a first order reaction. The initial concentration of $A$ is $0.2 \mathrm{~mol} \mathrm{~L}^{-1}$. After 10 minutes the concentration of $B$ is found to be $0.18 \mathrm{~mol} \mathrm{~L}^{-1}$. The rate constant (in $\min ^{-1}$ ) for the reaction is

$0.2303 \mathrm{~min}^{-1}$

$2.303 \mathrm{~min}^{-1}$

$0.693 \mathrm{~min}^{-1}$

$0.01 \mathrm{~min}^{-1}$

VITEEE 2023

MCQ (Single Correct Answer)

-0

Which is correct about zero order reaction?

Rate of reaction is dependent of concentration

Unit of rate constant is concentration$${ }^{-1}$$ time$$^{-}$$

The plot of concentration of reactant versus time is linear with negative slope and non-zero intercept.

The plot of concentration of reactant versus time is linear with positive slope and non-zero intercept.

VITEEE 2023

MCQ (Single Correct Answer)

-0

Arrhenius equation may not be represented as

$$\ln \frac{A}{k}=\frac{E_a}{R T}$$

$$k=A e^{-E a / R T}$$

$$\log A=\log k+\frac{E_a}{2.303 R T}$$

$$\log k-\left(\frac{E_{\mathrm{a}}}{R T}\right)=A$$

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