Question

Time - 1Hr. 15 min
the rate of reaction alte if the volume of the
F.M. - 35
(CHEMICAL KINETICS)
1. Choose the correct answer. Answer ALL questions
a) For the reaction 2NO+0, 2NO,. by how much will the rate of reaction an
vessel is reduced to 1/3 of its original volume?
i) Increase 27 times in Decrease 27 times IND) Increase 9 times
b) The rate constant of a reaction is 1.2 x 10-mol- litres. The order of the
10
in I
in) 2
c). For a chemical reaction, the activation energy is 35 Kcal and the chanical reaction is rid oot ar 300
and 310K. The rate constant K, at 310 in terms ofK, at 300K 15
i) 0.8 K
ii) 92K
i) 65 K
iv) 10K
d) In a reaction
A B , the rate of chemical reaction increases two times on increasing wa te
concentration of the reactant is doubled. The order of reaction would be
i) 0
in) 2
H) 1/2
e) In which of the following case does the reaction go farthest to completion
U-I
b) K= 102
c) K= 10
GK=1
2. Answer ANY FIVE questions.
2*5)
a) A first order reaction is 30% complete in 50 minutes. Calculate the value of rate constant.
b) A first order reaction is 20% complete in 10 minutes. How much time does it take for 75% completion
c) What is activation energy? How is the activation energy affected by the use of a catalyst an a rise in
temperature?
d) Why is it that rates of most reactions increase when the temperature of reaction mótture is increased in
what unit is the rate of reaction expressed?
e) The rate of a particular reaction triples when temperature changes from 50 C to 100 c. Calculate the
activation energy of the reaction (log 3 = 0.4771, R = 8.314 K mol)
1) What is the relationship between rate of chemical reaction and collision frequency of a reaction?
g) A certain reaction is 50% complete in 20 minutes at 300K and the same reaction is again 50% completes
minutes at 350K. Calculate the activation energy if it is a first order reaction
(R=8.314 JK morlog 4 = 0.502)
3. Answer ANY TWO questions.​

Answer 1

Answer:

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Explanation:

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