First slide

Gaseous state

Question

At 25°C and 730 mm pressure, 730 ml of dry oxygen was collected. If the temperature is kept constant, calculate volume in (L) that oxygen will occupy at 760 mm pressure.

Moderate

Solution

$P_{1} = 730 mm \begin{array}{l} V_{1} = 730 mL \\ V_{2} = ? \\ P_{2} = 760 mm \\ ∴ P_{1} V_{1} = P_{2} V_{2} \\ V_{2} = \frac{P_{1} V_{1}}{P_{2}} = \frac{730 \times 730}{760} = 701 mL \end{array}$

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