00:01
This question is basically asking us to determine percentage increase in time, percentage increase in time.
00:11
So, first of all we have to determine the order of the reaction.
00:16
So this is a first order reaction and what have we given here? we are given that the initial concentration, initial concentration of a can be denoted as c of a is basically c of a naught like this way.
00:37
Now we can determine rate from here.
00:41
So rate can be denoted as r also.
00:44
R can be written as rate constant k into concentration of a which is basically equal to minus da dt.
00:56
We can write it down like this way according to the formula of chemical kinetics.
01:00
Now, after solving we get a equals to c a naught e to the power minus kt c c a naught comes from the concentration of a.
01:19
Now let us take t 1 time taken for 0 .8 conversion.
01:26
So, a we can write it down this equation like this way a by c a naught equals to 0 .8 which is basically equal to e to the power minus kt 1...