MolSynapse
question bank
All chapters
NEET
JEE
Practice
MolSynapse
/
Question bank
/
Chemical Kinetics
/
Half-life and methods to determine order
NEET level
Single correct option
Difficulty 1 of 3
ck063
For a zero order reaction, doubling the initial concentration of the reactant makes the half-life
A
half
B
double
C
remain unchanged
D
four times
Answer: B
For zero order
t
1/2
=
[
A
]
0
/
(
2
k
)
, which is directly proportional to
[
A
]
0
. Doubling
[
A
]
0
therefore doubles
t
1/2
.
Practice Chemical Kinetics
More on Half-life and methods to determine order
Previous question
Next question
More questions on Half-life and methods to determine order
For a first order reaction, if the initial concentration of the reactant is doubled, the half-life
NEET level
For a second order reaction of the type 2A -> P, the initial concentration is made three times larger. The half-life becomes
NEET level
A first order reaction has k = 0.0231 min^-1. Using ln 2 = 0.693, its half-life is
NEET level
In an experiment on a reaction of the type A -> P, the concentration of A was increased to three times its value and the initial rate became...
NEET level
A first order reaction has a half-life of 40 min. The percentage of the reactant remaining after 2 h is
JEE Main level
A zero order reaction has k = 5.0x10^-3 mol L^-1 s^-1 and [A]_0 = 0.60 mol L^-1. Its half-life is
JEE Main level