The rate constant of a reaction is 0.69× 10- 1min- 1 and the initial concentration is 0.2molL- 1 . The half life period is :-

Question

The rate constant of a reaction is 0.69× 10- 1min- 1 and the initial concentration is 0.2molL- 1 . The half life period is :- (A) 400sec (B) 600sec (C) 800sec (D) 1200sec

Tardigrade Admin · Accepted Answer

(t1/2)=(0 . 693/K) (t1/2)=(0 . 693/0 . 69 × 10- 1)=10min t(1/2)=10× 60sec⇒ 600sec

Q. The rate constant of a reaction is $0.69 \times 1 0^{- 1} mi n^{- 1}$ and the initial concentration is $0.2 m o l L^{- 1}$ . The half life period is :-

$400 sec$

$600 sec$

$800 sec$

$1200 sec$

$\frac{t _{1}}{2} = \frac{0.693}{K}$
$\frac{t _{1}}{2} = \frac{0.693}{0.69 \times 1 0 ^{- 1}} = 10 min$
$t_{\frac{1}{2}} = 10 \times 60 sec \Rightarrow 600 sec$

Q. The rate constant of a reaction is 0.69×10−1min−1 and the initial concentration is 0.2molL−1 . The half life period is :-

400sec

600sec

800sec

1200sec