At 25° C and 730 mm pressure, 730 mL of dry oxygen was collected. If the temperature is kept constant what volume will oxygen gas occupy at 760 mm pressure?

Question

At 25° C and 730 mm pressure, 730 mL of dry oxygen was collected. If the temperature is kept constant what volume will oxygen gas occupy at 760 mm pressure? (A) 701 mL (B) 449 mL (C) 569 mL (D) 621 mL

Tardigrade Admin · Accepted Answer

P1=730 mm V1=730 mL V2=? P2=760 mm ∴ P1 V1=P2 V2 V2=(P1 V1/P2)=(730 × 730/760)=701 mL

Q. At $2 5^{\circ} C$ and $730 mm$ pressure, $730 m L$ of dry oxygen was collected. If the temperature is kept constant what volume will oxygen gas occupy at $760 mm$ pressure?

$701 m L$

$449 m L$

$569 m L$

$621 m L$

$P_{1} = 730 mm$
$V_{1} = 730 m L$
$V_{2} = ?$
$P_{2} = 760 mm$
$∴ P_{1} V_{1} = P_{2} V_{2}$
$V_{2} = \frac{P _{1} V _{1}}{P _{2}} = \frac{730 \times 730}{760} = 701 m L$

Q. At 25∘C and 730mm pressure, 730mL of dry oxygen was collected. If the temperature is kept constant what volume will oxygen gas occupy at 760mm pressure?

701mL

449mL

569mL

621mL