Chemical Kinetics Test

Result

Chemical Kinetics Test - 10

Score
-
out of -
Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
1 / -0

The half life periods of a reaction at initial concentration 0.1 mol/L and 0.5 mol/L are 200 s and 40 s respectively. The order of the reaction is

A
2

B
1/2

C
1

D
0

Solution

As initial concentration is increased half life is decreasing so order of reaction is 2.
for second order reaction, rate α 1/[R]
Question 2
1 / -0

For the reaction A → products, at [A] = 0.4 M, t_1/2= 24 s[A] = 0.2 M, t_1/2= 12 s. The unit for the rate constant is

A
S^–1

B
L²/mol²/s

C
mol/L/s

D
mol L^-1s^-1

Solution

The order of reaction will be zero because as concentration is decreased half life is also decreasing so rate constant unit will be mol L⁻¹s⁻¹