Test: Integrated Rate Equation - NEET MCQ

The correct answer is Option C
For a first-order reaction, the half-life is given by: t_1/2 = 0.693/k

For zero order reaction the rate equation is [A] = -kt + [Ao]

Thus the slope of the line is -ko

The correct answer is option  B
t_1/2​ = k0.693​
    = 0.693​/(6.2 × 10^{− 4})​ = 1117.7s

The correct answer is option D
Units:- for K can be calculated by (Mole)^1-n (Litre )^n-1 Time ^-1...
Here,n is the order of the reaction ....
On substituting n = 1.
We get, K units as;
K = (Mole)^1-1( Litre)^1-1 sec^-1.
K=sec-1.......

The correct answer is option A
As we know, for a first order reaction,

The correct answer is Option A
For first order reaction, the half-life period is independent of initial concentration.
For first order reaction, the half-life period expression (t1/2) is given by the expression t1/2= , where k is the rate constant.

The half life of a reaction is 15 min
So,
Here we go..
Formula to be used :

K =0.693/t = 0.693/15
__= 0.462/10 = 0.0462 min^-1

[A] = -kt + [A]₀
Here, [A] = [A₀]/2
[A]₀/2 = -kt + [A]₀
kt = [A]₀ - [A]0/2
t = [A]₀/2k
t_1/2 = [A]₀/2k