Answer

Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.

Updated On: 30-6-2021

Apne doubts clear karein ab Whatsapp par bhi. Try it now.

CLICK HERE

Loading DoubtNut Solution for you

Watch 1000+ concepts & tricky questions explained!

2.0 K+

97

Text Solution

Solution :

`lambda_(A) = lambda_(1) + lambda_(2) = .15 xx 10^(-5) + 5 xx 10^(-6) = 20 xx 10^(-6) s^(-1)` <br> Also, `2.303 log ([A]_(0))/([A]_(t)) = lambdas xx t` <br> `:. 2.303 log (0.25)/([A]_(t)) = 20 xx 10^(-6) xx 5 xx 60 xx 60` <br> `:. [A]_(t) = 0.1744 M` <br> `:. [A]_("decompound") = [A]_(0) - [A]_(t) = 0/25 - 0.1744` <br> `= 0.-756 = M` <br> Fraction of `C` formed `= [(lambda_(2))/(lambda_(1) + lambda_(2))] xx [A]_("decomposed") xx (2)/(5)` <br> `= 0.0756 xx (5 xx 10^(-6))/(20 xx 10^(-6)) xx (2)/(5)` <br> `= 7.56 xx 10^(-3) M`