MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

First Order Reaction

For a certain...

Question

For a certain first order reaction, it takes $5$ minutes for the initial concentration of $0.6$ $m o l$ $L^{- 1}$ to become $0.2$ $m o l$ $L^{- 1}$ . What is the rate constant for this reaction? $(log 3 = 0.4771)$

Open in App

Solution

$t = 5 m i n$
$A o = 0.6 m o l l^{- 1}$
$A = 0.2 m o l l^{- 1}$
$K = \frac{2.303}{5} l o g (\frac{0.6}{0.2})$
$K = 0.219 {m i n}^{- 1}$

Suggest Corrections

thumbs-up

0

Similar questions

Q. A reaction, which is second-order, has a rate constant of

0.002 L m o l^{- 1} s^{- 1}

. If the initial conc. of the reactant is 0.2 M, how long will it take for the concentration to become 0.0400 M?

Q. For a first order reaction, the rate constant is

0.1 {s e c}^{- 1}

. How much time will it take to reduce the concentration from initial value of

0.6

m o l^{- 1}

0.06

m o l

{l i t}^{- 1}

Q. The time for half life period of a certain reaction,

A \to Products

is 1 hour. When the initial concentration of the reactant 'A', is

2.0 {mol L}^{- 1}

, how much time (in hour) does it take for its concentration to come from

0.50 {mol L}^{- 1}

0.25 {mol L}^{- 1}

, if it is a zero order reaction?

Q. For the reaction

2 N_{2} O_{5} \to 4 N O_{2} + O_{2}

, if the initial concentration of

N_{2} O_{5}

7.2 m o l L^{- 1}

20

[N O_{2}]

2.4 m o l L^{- 1}

, then what will be rate of decomposition of

N_{2} O_{5}

m o l L^{- 1} m i n^{- 1}

Q. The time for half life period of a certain reaction,

A \to Products

is 1 hour. When the initial concentration of the reactant 'A', is

2.0 {mol L}^{- 1}

, how much time (in hour) does it take for its concentration to come from

0.50 {mol L}^{- 1}

0.25 {mol L}^{- 1}

, if it is a zero order reaction?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Integrated Rate Equations

CHEMISTRY

Watch in App

explore_more_icon

Explore more

First Order Reaction

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon