Question

A certain volume of gas was found to be at a pressure of 1200 mm of mercury.When the pressure was decreased by 50 mm the gas occupied a volume of 2400 mm.Calcualte the initial volume occupied by the gas

Answer 1

Explanation:

According to boyle's law

when T=cons

P

1

V

1

=P

2

V

2

now P

1

=1000V

1

=1200 and P

2

=700 ( as it decreased by 30%)

So V

2

=

P

2

P

1

×V

1

=

700

1000×1200

=1700cm

3