Answer to Question #257695 in General Chemistry for una

Question

A sample of oxygen occupies 47.2 litres under a pressure of 1240 torr at 25^oC. What volume would it occupy at 25^oC if the pressure were decreased to 730 torr?                                                      

Answer 1

In this question, temperature, T does not change (is constant) hence only pressure, P and volume, V changes.

In that case we apply Boyle's Law, P1V1=P2V2

P1=1240 torrent

P2=730 torrent

V1=47.2 L

V2 = P1V1/P2

= (1240 torr x 47.2 L)/730 torr

= 80.175L