For the reaction, 2A → B, rates= k[A]2. If the concentration of reactant is doubled, then the:

(a) rate of reaction will be doubled.
(b) rate constant will remain unchanged, however rate of reaction is directly proportional to the rate constant.
(c) rate constant will change since the rate of reaction and rate constant are directly proportional to each other.
(d) rate of reaction will increase by four times.

Identify the set of correct statements & choose the correct answer from the options given below:

1. (a) and (c) only 2. (a) and (b) only
3. (b) and (d) only 4. (c) and (d) only

Subtopic:  Definition, Rate Constant, Rate Law |
 69%
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NEET - 2022
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For a general reaction A → B, the plot of concentration of A vs time is given below:

The unit of the rate constant would be:

1. \(\mathrm{mol}^{-1} \mathrm{~L}^{-1} \mathrm{~s}^{-1} \) 2. \(s^{-1} \)
3. \(\mathrm{mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1} \) 4. None of the above

Subtopic:  First Order Reaction Kinetics |
 65%
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For a general reaction A → B, the plot of concentration of A vs time is given below:

The order of the reaction would be- 

1. Zero 

2. First

3. Half

4. Second

 

 

 

Subtopic:  Order, Molecularity and Mechanism |
 71%
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The correct statement about X in the below mentioned graph:

1. X represents activation energy without catalyst.
2. X represents activation energy with catalyst.
3. X represents the enthalpy of the reaction without a catalyst.
4. X represents the enthalpy of the reaction with a catalyst.
Subtopic:  Arrhenius Equation |
 86%
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The graph between lnK and 1/T is given below:

The value of activation energy would be:

1. \(207.8\ \mathrm{KJ} / \mathrm{mol} \) 2. \(- 207.8\ \mathrm{KJ} / \mathrm{mol} \)
3. \(210.8\ \mathrm{KJ} / \mathrm{mol} \) 4. \(-210.8\ \mathrm{KJ} / \mathrm{mol} \)
Subtopic:  Arrhenius Equation |
 69%
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Consider the following graph:

The point that represents the most probable kinetic energy is -

1. C

2. A

3. B

4. None of the above

Subtopic:  Catalyst |
 83%
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The nature of the reaction represented in the following graph is:

1. Endothermic reaction
2. Exothermic reaction
3. Both endothermic and exothermic reactions are represented by the same graph.
4. None of the above
Subtopic:  Arrhenius Equation |
 83%
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The slope of the given below graph is -

 1. k2.303

2. -k2.303

3. -2.303k

4. 2.303k

Subtopic:  First Order Reaction Kinetics |
 58%
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Consider the following graph:
      

The instantaneous rate of reaction at t = 600 sec will be:

1. - 4.75 ×10-4 mol L-1s-1
2. 5.75×10-5 mol L-1s-1
3.  6.75×10-6 mol L-1s-1
4. -6.75×10-6 mol L-1s-1

Subtopic:  Definition, Rate Constant, Rate Law |
 54%
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Based on the graph below, the average rate of reaction will be: 

1.  \(\frac{[R_{2}]-[R_{1}]}{t_{2}-t_{1}}\)
2.  \(-(\frac{[R_{2}]-[R_{1}]}{t_{2}-t_{1}})\)
3.  \(\frac{[R_{2}]}{t_{2}}\)
4.  \(-(\frac{[R_{1}]-[R_{2}]}{t_{2}-t_{1}})\)

Subtopic:  Definition, Rate Constant, Rate Law |
 71%
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