Modern Approach to Chemical Calculations>Chapter 17 - Chemical Kinetics>Objective Problems>Q 36

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IMPORTANT

Earn 100

When the concentration of a reactant $A$ in a reaction: $A \to$ Products is doubled, the rate of the reaction increases seven times. The order of the reaction is between:

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Important Questions on Chemical Kinetics

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JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 17 - Chemical Kinetics>Objective Problems>Q 37

When the concentration of a reactant in a reaction,

A \to

Products, is doubled, the increase in the rate of reaction cannot be more than:

HARD

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IMPORTANT

Modern Approach to Chemical Calculations>Chapter 17 - Chemical Kinetics>Objective Problems>Q 38

For a second-order reaction of the type: $\begin{matrix} a \\ 2 A \\ a - x \end{matrix} \to \underset{x / 2}{products,}$

the rate law is given by:

$rate = - \frac{1}{2} \frac{d (a - x)}{d t} = + \frac{d (x / 2)}{d t} = k_{2} (a - x)^{2}$

The Integrated rate law will be:

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Modern Approach to Chemical Calculations>Chapter 17 - Chemical Kinetics>Objective Problems>Q 39

50 %

of a zero order reaction completes in

10

minutes.

100 %

of the same reaction shall complete in:

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JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 17 - Chemical Kinetics>Objective Problems>Q 40

The rate constant,

k

of a second-order reaction,

A \to

Products is given by

k = \frac{1}{t} \{\frac{x}{a (a - x)}\}

. The ratio

t_{3 / 4} / t_{1 / 2}

is equal to:

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IMPORTANT

Modern Approach to Chemical Calculations>Chapter 17 - Chemical Kinetics>Objective Problems>Q 41

In which of the reactions of the following orders the molecularity and order can never be same?

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Modern Approach to Chemical Calculations>Chapter 17 - Chemical Kinetics>Objective Problems>Q 42

Which of the following curves represent(s) a zero-order reaction?

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Modern Approach to Chemical Calculations>Chapter 17 - Chemical Kinetics>Objective Problems>Q 43

A plot of reactant concentration versus time for a reaction is a straight line with a negative slope giving the rate constant, and the intercept, giving the initial concentration of the reactant. The order of the reaction is:

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IMPORTANT

Modern Approach to Chemical Calculations>Chapter 17 - Chemical Kinetics>Objective Problems>Q 44

Consider the chemical reaction,

N_{2} (g) + 3 H_{2} (g) \to 2 {NH}_{3} (g)

. The rate of this reaction can be expressed in terms of time derivative of concentration of

N_{2} (g), H_{2} (g)

or

{NH}_{3} (g)

. Identify the correct relationship amongst the rate expressions.