NEET Questions

Raising the temperature of a reversible chemical reaction :

The activation energies of two reactions are ${E_1}\;and\;{E_2}({E_1} > {E_2})$. If the temperature of the system is increased from ${T_1}\;and\;{T_2}$, the rate constant of the reactions changes from ${k_1}\;to\;{k_2}$ in the first reaction and ${k_1}\;and\;{k_2}$ in the second reaction. Predict which of the following expression is correct?

The half life for a reaction … of temperature.

The rate constant of a reaction at temperature $200\;K$ is 10 times less than the rate constant at $400\;K$. What is the activation energy (${E_a}$ ) of the reaction?

The rate constant of a reaction at temperature $200\;K$ is 10 times less than the rate constant at $400\;K$. What is the activation energy (${E_a}$ ) of the reaction?

Arrhenius equation may not be represented as

The activation energy of a reaction is $9\;{\rm{ }}kcal/mol$. The increase in the rate constant when its temperature is raised from $295\;K{\rm{ }}to\;{\rm{ }}300\;{\rm{ }}K$ is approximately

Activation energy of a reaction

The velocity constant of a reaction at $290\;K$ was found to be $3.2 imes {10^{ - 3}}\;at\;300\;K$, it will be

The reason for almost doubling the rate of reaction on increasing the temperature of the reaction system by $10^\circ C$ is