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Q 1/50
Score 0
For a second-order reaction, what is the unit of the rate of the reaction?
120
mol-1Â L s-1
mol L-1s-1
 s-1
mol-2Â L2Â s-1
Q 2/50
Score 0
The rate constant of a reaction is k=3.28 Ă— 10-4Â s-1. Find the order of the reaction.
120
Third order
First order
Zero order
Second order
50 questions
Q.
For a second-order reaction, what is the unit of the rate of the reaction?
1
120 sec
Q.
The rate constant of a reaction is k=3.28 Ă— 10-4Â s-1. Find the order of the reaction.
2
120 sec
Q.
For a reaction A +B → C, the experimental rate law is found to be R=k[A]1[B]1/2. Find the rate of the reaction when [A] = 0.5 M, [B] = 0.1 M and k=0.03.
3
120 sec
Q.
For the reaction A + H2O → products, find the rate of the reaction when [A] = 0.75 M, k= 0.02.
4
120 sec
Q.
What is the rate law for acid hydrolysis of an ester such as CH3COOC2H5Â in aqueous solution?
5
120 sec
Q.
What is the rate law for the reaction C2H4 + I2 → C2H4I2?
6
120 sec
Q.
The rate law for the reaction involved in inversion of cane sugar is R=k [C12H22O11] [H2O].
7
120 sec
Q.
How many times will the rate of the elementary reaction 3X + Y → X2Y change if the concentration of the substance X is doubled and that of Y is halved?
8
120 sec
Q.
What is the concentration of the reactant in a first order reaction when the rate of the reaction is 0.6 s-1Â and the rate constant is 0.035?
9
120 sec
Q.
Rate of a reaction depends on the ΔH of the reaction.
10
120 sec
Q.
Which of the following is not a direct factor affecting the rate of a reaction?
11
120 sec
Q.
Which of the following will lead to an increase in the rate of the reaction?
12
120 sec
Q.
A catalyst only increases the rate of the reaction in the forward direction.
13
120 sec
Q.
What happens to the rate of the reaction on increasing its temperature?
14
120 sec
Q.
Which of the following laws state that the rate of a chemical reaction is directly proportional to the concentration of reactants?
15
120 sec
Q.
What happens to the value of ΔG of a reaction when a catalyst is added to it?
16
120 sec
Q.
What is the change in the rate of a second order reaction when the concentration of the reactant is increased by 2 times its initial value?
17
120 sec
Q.
Which of the following is a factor that automobile engines use to increase the rate of its internal reactions?
18
120 sec
Q.
The rate constant of a reaction is 0.01s-1, how much time does it take for 2.4 mol L-1Â concentration of reactant reduced to 0.3 mol L-1?
19
120 sec
Q.
What time does it take for reactants to reduce to 3/4 of initial concentration if the rate constant is 7.5 x 10-3Â s-1?
20
120 sec
Q.
A zero-order reaction is 25% complete in 30seconds. What time does it take for 50% completion?
21
120 sec
Q.
What is the integrated rate equation for a first order reaction?
22
120 sec
Q.
What is the formula to calculate the time taken for the completion of a zero-order reaction?
23
120 sec
Q.
What is the time required for 75 percent completion of a first-order reaction?
24
120 sec
Q.
The unit of rate constant of a first-order reaction is s-1.
25
120 sec
Q.
The unit of the rate constant of a zero-order reaction and second-order reaction is same.
26
120 sec
Q.
For a pseudo first-order reaction, what is the unit of the rate of the reaction?
27
120 sec
Q.
Which of the following reactions is an example of a pseudo first-order reaction?
28
120 sec
Q.
The rate law for inversion of cane sugar is R=k [C12H22O11][H2O]. Find the concentration of sucrose if the rate of the reaction is 0.032 s-1Â and rate constant k=0.005.
29
120 sec
Q.
What is the rate law of hydrolysis of CH3COOC2H5Â in aqueous solution?
30
120 sec
Q.
Which of the following is not similar between a first order and pseudo first order reaction?
31
120 sec
Q.
Which of the following is not an example of a pseudo first-order reaction?
32
120 sec
Q.
For the reaction C2H5COOC2H5 + H2O → C2H5COOH + C2H5OH, find the concentration of [C2H5COOC2H5] if the rate constant k=0.2 and the rate of the reaction is 0.39 s-1.
33
120 sec
Q.
Acid hydrolysis of esters such as CH3COOC2H5Â in aqueous solution is an example of a pseudo first-order reaction.
34
120 sec
Q.
The rate of a reaction depends on the temperature.
35
120 sec
Q.
Which of the following is the correct expression for the temperature coefficient (n)?
36
120 sec
Q.
The rate of reaction increases with a rise in temperature.
37
120 sec
Q.
What happens to the peak of the curve in the Maxwell-Boltzmann distribution graph if temperature increases?
38
120 sec
Q.
Which of the following is the correct Arrhenius equation?
39
120 sec
Q.
Which of the following represents the Boltzmann factor?
40
120 sec
Q.
What is R in the equation k = Ae-Ea/RT?
41
120 sec
Q.
The rate constant of a reaction is 6 × 10-3 s-1 at 50° and 9 × 10-3 s-1 at 100° C. Calculate the energy of activation of the reaction.
42
120 sec
Q.
When a catalyst is involved in the collision between the reactant molecules, more energy is required.
43
120 sec
Q.
Effective collisions are those in which molecules must acquire the energy of activation.
44
120 sec
Q.
Who put forward the collision theory of chemical reactions?
45
120 sec
Q.
The proper orientation of reactant molecules leads to bond formation.
46
120 sec
Q.
Which of the following is a drawback of collision theory?
47
120 sec
Q.
What is the term used to refer to the number of collisions per unit volume of the reaction mixture?
48
120 sec
Q.
What is the rate of reaction for a bimolecular elementary reaction?
49
120 sec
Q.
What are the factors that determine an effective collision?
