Question

At $25^\circ$C and 730 mm pressure, 380 mL of dry oxygen was collected. If the temperature is constant, what volume will the oxygen occupy at 760 mm pressure?

• A. 365 mL
• B. 449 mL
• C. 569 mL
• D. 621 mL

Answer 1

Answer: (A)

365 mL

Answer 2

As the temperature is constant, Boyle- law is applicable.
$p_1V_1 = p_2V_2$
$V_1 = 380 mL, p_1 = 730 mm, V_2 = ?,$
$p_2 = 760 mm$
$730 \times 380 = 760 \times V_2$
$\, \, \, \, \, \, \, \, \, \, \, \, V_2=\frac{730\times 380}{760}=365mL$