00:01
Hello everyone.
00:02
In this question we have to find the molar flux of a interfacial concentration of a and the overall mass transfer coefficient for liquid and gas phase.
00:11
What is given here y a is equal to 0 .75 times xa and liquid contains 90 % of mole of a gas contain 45 more percent of a and the mass transfer coefficient at that particular point is 0 .0 -2716.
00:26
So let's see the solution for it.
00:28
First of all what is given here why is equal to 0 .0.
00:31
7 times of xa and what is the value of r here it is 70 percentage so from here we can find the value of xa and y a it will be xa will be equal to 0 .9 and y a will be equal to 0 .45 so now what is the value of k it is 0 .02716 it is given in the question and what we have to find we have to find x a i y a i we have to find k a we have to find here so first of all we will see the graph here how it will be drawn so the graph will be drawn in such a way this will be y a and this will be xa which is 0 .9 and this is how much this is 0 .45 so we can calculate the value of kc from here that will be 0 .02716.
01:46
The value of ky will be hence equal to 0 .02716 and if we see the 70 % overall resistance to mass transfer is in gas film.
02:01
I will write here 70 % overall resistance to mass transfer is in the gas film.
02:18
So the gas face resistance will be how much the gas phase resistance will be equal to 36 .81.
02:32
So what will be the total mass transfer resistance? total mass transfer resistance will be equal to 36 .81 divided by 0 .7, which will give a value of 52 .598.
02:50
And what will be the total liquid face resistance? total liquid face resistance.
03:03
This will be 52 .598 divided by 1 .07.
03:09
So this will give a value of 175 .3278.
03:13
From here, 175 .3278 will be equal to m divided by kx.
03:21
So this will be, from here we can find the value of kx...