Question

A 27C and 640 mm pressure, 320 mL of dry N2, gas was collected of the temperature is constant what volume will the N2, gas will occupy at 800 mm
pressure?
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Answer 1

Answer:256ml

Explanation:

p1vi=p2v2

v2=640*320/800

=256ml

Answer 2

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Note:

• P = Pressure
• T = Temperature
• V = Volume

Given:

Temperature is constant that is 27° C

P1 = 640 mm

V1 = 320 ml

P2 = 800 mm

To find:

V2 = ?

Explanation:

According to Boyles Law,

Pressure is inversely proportional to volume

$\\ \\ P ∝ \dfrac{1}{V} \\ \\PV = constant \\ \\ P1 \: V1 = P2 \: V2$

$\\ \\P1 \: V1 = P2 \: V2 \\ \\ 640 \times 320 = 800 \times V2 \\ \\ 204800 = 800 \times \: V2 \\ \\ \dfrac{204800}{800} =V2$

$\\ \\ V2 = 256 ml$

Answer:

Thus, N2 gas will occupy 256 ml volume at 800 mm pressure

Knowledge booster:

1. According to Charles Law, Temperature is directly proportional to volume
2. According to Gay- Lussac law, Pressure is directly proportional to Temperature
3. According to Avogadro law, Volume is directly proportional to number of moles
4. These all law gave rise to ideal gas law PV = nRT
5. Try to solve more such questions to get good hold on it