Thermal decomposition of N 2 O 5 occurs as per the equation below : 2 N 2 O 5 → 4 NO 2 + O 2 The correct statement is

rate of disappearance of N 2 O 5 is twice the O 2 production rate

O 2 production rate is four times the NO 2 production rate

O 2 production rate is the same as the rate of disappearance of N 2 O 5

rate of disappearance of N 2 O 5 is one-fourth of NO 2 production rate

For an elementary reaction 2 A + 3 B → 4 C + D the rate of appearance of C at time ' t ' is 2 . 8 × 10 - 3 mol L - 1 S - 1 . Rate of disappearance of B at ' t ' , t will be

3 4 2 . 8 × 10 - 3 molL - 1 S - 1

2 2 . 8 × 10 - 3 molL - 1 S - 1

1 4 2 . 8 × 10 - 3 molL - 1 S - 1

4 3 2 . 8 × 10 - 3 molL - 1 S - 1

The following results have been obtained during the kinetic studies of reaction: 2 NO + 2 H 2 ⟶ N 2 + 2 H 2 O Expt - d [ NO ] dt molL - 1 s - 1 [ NO ] molL - 1 H 2 molL - 1 1 . 4 . 8 × 10 - 5 1 × 10 - 2 1 × 10 - 3 2 . 43 . 2 × 10 - 5 3 × 10 - 2 1 × 10 - 3 3 . 86 . 4 × 10 - 5 3 × 10 - 2 2 × 10 - 3

- d [ NO ] dt = k [ NO ] 2 H 2 1 2

For the reaction, 3A + 2B → C + D , the differential rate law can be written as :

- 1 3 d A dt = d C dt = k A n B m

+ 1 3 d A dt = - d C dt = k A n B m

1 3 d A dt = d C dt = k A n B m

Calculate the rate of the reaction, A + 2 B → 2 C + D .

The reaction rate or rate of reaction is the speed at which a chemical reaction takes place, defined as proportional to the increase in the concentration of a product per unit time and to the decrease in the concentration of a reactant per unit time. Reaction rate = Change in the concentration of reactant or product Time We have given, A + 2 B → 2 C + D . The rate of the reaction for the above reaction = - ∆ A ∆ t = - 1 2 ∆ B ∆ t = 1 2 ∆ C ∆ t = ∆ D ∆ t

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What is moderate reaction?

Important Questions on Chemical Kinetics

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

Thermal decomposition of $N_{2} O_{5}$ occurs as per the equation below :

$2 N_{2} O_{5} \to 4 {NO}_{2} + O_{2}$

The correct statement is

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

For an elementary reaction

2 A + 3 B \to 4 C + D

the rate of appearance of

C

at time

' t'

2.8 \times 10^{- 3} mol L^{- 1} S^{- 1}

. Rate of disappearance of

B

' t'

t

will be

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

The following results have been obtained during the kinetic studies of reaction:
$2 NO + 2 H_{2} ⟶ N_{2} + 2 H_{2} O$

Expt	$\frac{- d [NO]}{dt}$ ${molL}^{- 1} s^{- 1}$	$[NO]$ ${molL}^{- 1}$	$[H_{2}]$ ${molL}^{- 1}$
$1$ .	$4.8 \times 10^{- 5}$	$1 \times 10^{- 2}$	$1 \times 10^{- 3}$
$2$ .	$43.2 \times 10^{- 5}$	$3 \times 10^{- 2}$	$1 \times 10^{- 3}$
$3$ .	$86.4 \times 10^{- 5}$	$3 \times 10^{- 2}$	$2 \times 10^{- 3}$

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

For the reaction,

2 A + B \to 3 C + D

, which of the following does not express the reaction rate?

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

What is instantaneous rate of reaction?

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

The rate of chemical reaction doubles for every

100

rise in temperature. If the temperature increase by

600,

the rate of reaction increases

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

In the reaction,

N_{2} + 3 H_{2} ⟶ 2 {NH}_{3}

, the rate of disappearance of

H_{2}

0.02 M / s

. The rate of appearance of

{NH}_{3}

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

Define molecularity of a reaction. The reaction

3 A \to 2 B + C

is carried out in a closed vessel. The rate of disappearance of

A (\frac{- d [A]}{dt})

0.1 {molL}^{- 1} S^{- 1}

. Calculate

\frac{d [B]}{dt}

and

\frac{d [C]}{dt}

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

What is the rate determining step of a reaction?

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

For the reaction

N_{2} + 3 H_{2} \to 2 {NH}_{3}

, if

\frac{Δ [{NH}_{3}]}{Δt} = 2 \times 10^{- 4} mol L^{- 1} s^{- 1},

the value of

\frac{- Δ [H_{2}]}{Δt}

would be

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

Explain rate of chemical reaction.

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Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

For the reaction,

3A + 2B \to C + D

, the differential rate law can be written as :

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

Calculate the rate of the reaction,

A + 2 B \to 2 C + D

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

For the reaction,

2 {SO}_{2} + O_{2} ⇌ 2 {SO}_{3}

, The rate of disappearance of

O_{2}

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

. The rate of appearance of

{SO}_{3}

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

Write four differences between rate of reaction and rate constant.

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

The decomposition of

{NH}_{3}

on platinum surface is zero order reaction. What is the rate of production of

N_{2}

k = 2.5 \times 10^{- 4} mol L^{- 1} s^{- 1}

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

The unit for the rate of reaction is

MEDIUM

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

Given the hypothetical reaction mechanism

$A \overset{I}{⟶} B \overset{II}{⟶} C \overset{III}{⟶} D \overset{IV}{\to} E$ and the rate as

Species formed	Rate of its information
$B$	$0.002 mol / h$ per mole of $A$
$C$	$0.030 mol / h$ per mole of $B$
$D$	$0.011 mol / h$ per mole of $C$
$E$	$0.420 mol / h$ per mole of $D$

The rate determining step is

EASY

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

For the chemical reaction

N_{2} (g) + 3 H_{2} (g) ⇋ 2 N H_{3} (g)

, the correct option is:

HARD

Chemistry>Physical Chemistry>Chemical Kinetics>Rate of a Chemical Reaction

Calculate the number of

α

and

β

particles emitted in the conversion of

_{90} {Th}^{232}

_{82} {Pb}^{208}

What is moderate reaction?

Important Questions on Chemical Kinetics

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