The kinetic data for the reaction: 2A + B2 → 2AB are as given below

[A]/mol L-1 [B2]/mol L-1 Rate/mol L-1s-1
0.5 1.0 2.5 × 10-3
1.0 1.0 5.0 × 10-3
0.5 2.0 1 × 10-2

The order of reaction with respect to A and B2 is, respectively:

1. 1 and 2 2. 2 and 1
3. 1 and 1 4. 2 and 2

Subtopic:  Order, Molecularity and Mechanism |
 78%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

For the irreversible unimolecular type reaction A kproducts in a batch reactor, 80% reactant A(CA0 = 1 mole/lit.)is converted in a 480 second run and conversion is 90% after 18 minute. The order of this reaction is-

(A) 1                                                       

(B) 2

(C) 1/2                                                   

(D) 3/2

Subtopic:  First Order Reaction Kinetics |
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

The rate constant, the activation energy, and the Arrhenius parameter of a chemical reaction at 25°C are 3.0×10-4 s-1104.4 kJ mol-1 and 6.0×1014s-1 respectively.
The value of the rate constant as T → ∞ will be:

1. 2.0 × 1018 s-1                                                  

2. 6.0 × 1014 s-1

3.                                                                    

4. 3.6 × 1030 s-1

Subtopic:  Arrhenius Equation |
 73%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The gas phase decomposition 2N2O5 → 4NO2 + O2 follows the first order rate law, K = 7.5 × 10-3 sec-1. The initial pressure of N2O5 is 0.1 atm. The time of decomposition of N2Oso that the total pressure becomes 0.15 atm will be -

1. 54 sec 2. 5.4 sec
3. 3.45 sec 4. 34.55 sec
Subtopic:  First Order Reaction Kinetics |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

If in the fermentation of sugar in an enzymatic solution that is 0.12 M, the concentration of the sugar is reduced to 0.06 M in 10 h and to 0.03 M in 20 h, the order of the reaction will be:

1. 1                                                   

2. 2

3. 3                                                   

4. 0

Subtopic:  First Order Reaction Kinetics |
 65%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

In a first-order reaction A  products, the concentration of the reactant decreases to 6.25 % of its initial value in 80 minutes. The value of the rate constant, if the initial concentration is 0.2 mole/litre, will be:

1. 2.17 × 10-2 min-1

2. 3.46 × 10-2 min-1

3. 3.46 × 10-3min-1

4. 2.16 × 10-3 min-1

Subtopic:  Arrhenius Equation |
 68%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A catalyst lowers the activation energy of a reaction from 20 kJ mol–1 to 10 kJ mol-1. The temperature at which the uncatalysed reaction will have the same rate as that of the catalysed at 27 oC will be:
1. \(-123\ ^{\circ}C\)
2. \(-327\ ^{\circ}C\)
3. \(327\ ^{\circ}C\)
4. \(23\ ^{\circ}C\)

Subtopic:  Arrhenius Equation |
 66%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

For a certain reaction the variation of the rate constant with temperature is given by the equation

                            In k1=In k0+In 310t t0°C

The value of the temperature coefficient of the reaction rate is therefore –

(A) 4                                                  

(B) 3

(C) 2                                                   

(D) 10

 

Subtopic:  Order, Molecularity and Mechanism |
 66%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

A catalyst lowers the activation energy of a reaction from 20 kJ mole-1 to 10 kJ mole-1. The temperature at which the uncatalysed reaction will have the same rate as that of the catalysed at 27°C is :

(1) -123°C                                                     

(2) 327°C

(3) - 327°C                                                         

(4) +23°C

Subtopic:  Arrhenius Equation |
 71%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The rate of reaction triples when the temperature changes from \(20{ }^{\circ} \mathrm{C} \text { to } 50^{\circ} \mathrm{C}\). The energy of activation for the reaction will be:

1. \(28.81 \mathrm{~kJ} \mathrm{~mol}^{-1} \) 2. \(38.51 \mathrm{~kJ} \mathrm{~mol}^{-1} \)
3. \(18.81 \mathrm{~kJ} \mathrm{~mol}^{-1} \) 4. \(8.31 \mathrm{~kJ} \mathrm{~mol}^{-1}\)
Subtopic:  Arrhenius Equation |
 63%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh