Q

# I need help with - Chemical kinetics - NEET

The rate of the reaction $2NO+Cl_{2}\rightarrow 2NOCl$ is given by the rate equation rate=k [NO]2 [Cl2]

The value of the rate constant can be increased by:

• Option 1)

Increasing the concentration of NO

• Option 2)

Increasing the temperature

• Option 3)

Increasing the concentration of the Cl2

• Option 4)

Doing all of these

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As we learnt in

Arrhenius Equation -

Arrhenius gave the quantitative dependence of rate constant on temperature by the Arrhenius equation.

- wherein

$k = A e^{-E_{a}/RT}$

$In k=InA-\frac{E_{a}}{RT}$

$k$ = Rate constant

The value of rate constant cannot be altered by changing concentration of reactants  but by changing temperature, as given by arrhenius equation. As temperature rises, so does k.

$k=A_{e}^{-Ea/RT}$

therefore, solution is 2

Option 1)

Increasing the concentration of NO

incorrect

Option 2)

Increasing the temperature

correct

Option 3)

Increasing the concentration of the Cl2

incorrect

Option 4)

Doing all of these

incorrect

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