Question

The half-life period of a first-order chemical reaction is 6.93 min. The time required for the completion of 99% of the chemical reaction will be (log

Answer 1

Answer:

The half-life period if the first order chemical reaction is 6.93 min. The time required for the completion of 99% of the chemical reaction will be (log2 = 0.3010):

Answer 2

Answer:

The half life period t  

1/2

​  

=6.93 min.

The decay constant λ=  

t  

1/2

​  

 

0.693

​  

=  

6.93min

0.693

​  

=0.1/min

t=  

λ

2.303

​  

log  

a−x

a

​  

 

t=  

0.1/min

2.303

​  

log  

100−99

100

​  

 

t=46.06min

Hence, the time required for 99% completion of the reaction is 46.06 min

Explanation: