00:01
Hello students, we have a question on gas laws.
00:03
We know that according to ideal gas equation pv is equal to nrt.
00:09
So pv by t will remain constant.
00:16
Hence we can say that p1 v1 divided by t1 must be equal to p2 v2 divided by t2.
00:28
So let's put the values here.
00:31
Now in p2 we have been told that total pressure is equal to 750 mm hg and pressure because of vapors is 31 .8 mm hg.
00:51
Therefore the pressure by gas can be calculated by subtracting the vapors pressure from the total pressure.
01:05
So p2 will be equal to 718 .2 mm hg.
01:14
This will be the value of pressure of gas.
01:18
Now v2 from this formula will be equal to p1 v1 t2 divided by t1 v2.
01:32
Now let's enter all the values.
01:39
P1 was given 760 mm hg...