5dm3 of dry oxygen gas is allowed to expand to 7dm3, when its pressure recorded is 700mm of Hg. Find?initial pressure of gas, assume temperature remain constant. ? ?[980mm of Hg].
Dear Student,
According to the gas equation,
Given that V1 = 5dm3,
V2 = 7dm3
(final pressure) P2 = 700mm of hg,
As the temperature is constant,so the equation will be P1V1 = P2V2
to find : P1 (initial pressure) = ?
Putting all the values in the above equation,we get
P1 5 = 700 7
P1 = 980 mm of hg (initial pressure of gas)
Regards