Chemical Kinetics Test

Result

Chemical Kinetics Test - 8

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
0 / -0

Consider a reaction:

3 A → B + C

It would be zero order reaction when the rate of the reaction

A
is proportional to the square of the concentration of A

B
remains the same at any concentration of A

C
is directly proportional to the concentration of A

D
is halved when the concentration of A is doubled

Solution

According to rate law:
Rate of reaction = k[reactant]^x

Where, x may or may not be equal to the Stoichiometric coefficient in the balanced equation.

For zero order reaction: Rate of reaction is independent of concentration of the reactants.
x = 0

Rate = Constant at a constant temperature, irrespective of the concentration of A
Question 2
0 / -0

Directions For Questions

The following question has four choices, out of which only one is correct.

...view full instructions

Trans-1,2-dideuterocyclopropane (A) undergoes a first order decomposition. The observed rate constant at a certain temperature, measured in terms of the disappearance of A, was 1.65 ×10^-4 s^-1. Analysis of the reaction products showed that the reaction followed two parallel paths, one leading to dideutero propane (B) and the other to cis-1,2-dideuterocyclopropane (C). B was found to constitute 12% of the reaction product independent of the extent of reaction.

The respective orders of the reaction in the two parallel paths are

A
1.98 × 10^-5 and 1.452 × 10^-4

B
2.98 × 10^-4and 0

C
0 and 2.98 × 10^-4

D
None of these

Solution

Since the percent distributions of B and C, respectively are 12% and 88%,
A → B
K₁ = 12% of 1.65 × 10^-4= 1.98 × 10^-5
K₂ = 88% of 1.65^×10^-4= 1.452 ×10^-4