Home
Class 12
CHEMISTRY
Half-life of a radioactive disintegratio...

Half`-`life of a radioactive disintegration `(A rarr B)` having rate constant `231s^(-1)` is a)`3.0 xx 10^(-2)s` b)`3.0 xx 10^(-2)s` c)`3.3xx10^(-2)s` d)`3.3xx10^(-3)s`

A

`3.0 xx 10^(-2)` s

B

`3.0 xx 10^(-3)` s

C

`3.3 xx 10^(-2)` s

D

`3.3xx 10^(-3)` s

Text Solution

Verified by Experts

The correct Answer is:
B
`t_(1//2) = (0.693)/(lambda) = (0.693)/(231 s^(-1)) = 3.0 xx 10^(-3) s `
Promotional Banner

Similar Questions

Explore conceptually related problems

Half - life of a radioactive disintegration (A rarr B) having rate constat 231s^(-1) is

Calculate the half life of the first order reaction from their rate constant given as 100 s^(-1) (1) 100 s^(-1) (2) 6.93 xx 10^(-2)s (3) 0.693 xx 10^(-3)s (4) 6.93 xx 10^(-3) s (ii) Calculate the half life of the first order reaction from their rate constant given as 0.5 min^(-1) (1) 1.386 min, (2) 0.3465 min (3) 0.231 min, (4) 1.0395 min

(2.4xx10^(3))-:(8xx10^(-2))=?3xx10^(-5)b3xx10^(4)c.3xx10^(5)d.30

Henry 's law constant for the solubility of N_(2) gas in water at 298 K is 1.0 xx 10^(5) atm . The mole fraction of N_(2) in air is 0.6 . The number of moles of N_(2) from air dissolved in 10 moles of water at 298 K and 5 atm pressure is a. 3.0 xx 10^(-4) b. 4.0 xx 10^(-5) c. 5.0 xx 10^(-4) d. 6.0 xx 10^(-6)

Identify the order of a reaction for each of the following rate constants: i) k=2.3 xx 10^(-5)L mol^(-1)s^(-1) ii) k= 3 xx 10^(4)s^(-1) .