Question

a gas was allowed to expand at a constant temperature from its intial volume of 500ml to 1000ml. at the end of expansion the pressure of the gas was found to be 1 atm what was the intial pressure of the gas
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Answer 1

Since the temperature remains constant, Boyle's law is applicable

This means that:

P

1

V

1

=P

2

V

2

Here, P

1

=??

V

1

=400 mL

P

2

=100 mm

V

2

=1000 mL

Putting all the values, we get

P

1

×400=100×1000

P

1

=250 mm

Answer 2

Answer:

2 atm

Explanation:

At constant temperature, PV = constant [Boyle's law]

P1 × V1 = P2 × V2

P1 × 500 = 1 × 1000

P1 = 1000/500 = 2 atm