Get Answers to all your Questions

header-bg qa

If 50% of a reaction occurs in 100 second and 75% of the reaction occurs in 200 second, the order of this reaction is :

  • Option 1)

    zero

  • Option 2)

    1

  • Option 3)

    2

  • Option 4)

    3

 

Answers (3)

As we have learned

First Order Reaction -

The rate of the reaction is proportional to the first power of the concentration of the reaction

- wherein

Formula:

R    \rightarrow        P

a                 0

a-x             x

rate[r]=K[R]^{1}

\frac{-d(a-x)}{dt}=K(a-x)

\frac{-dx}{dt}=K(a-x)  [differentiate rate law]

ln \:[\frac{a}{a-x}]=kt \:(Integrated rate law)

Unit of k=sec^{-1}

t_\frac{1}{2}=\frac{0.693}{k}

 

In First order reaction Half Life is constant.

 

 


Option 1)

zero

This is incorrect

Option 2)

1

This is correct

Option 3)

2

This is incorrect

Option 4)

3

This is incorrect

Posted by

subam

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

3

 

Posted by

Jaya

View full answer