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rosijanka
4 months ago
8

A gas mixture consists of 320 mg of methane, 175 mg of argon, and 225 mg of neon. the partial pressure of neon at 300k is 8.87 k

pa. calculate (i) the volume and (ii) the total pressure of the mixture.
Chemistry
1 answer:
alisha [2.9K]4 months ago
5 0
To find the volume of the gas blend, we must first ascertain the mixture's overall pressure. This requires using the concept of partial pressure, which represents the pressure that each gas would exert if it occupied the container alone. The partial pressure equals the mole fraction multiplied by the total system pressure. This allows us to find the total pressure.

Pneon = xneonP
P = Pneon / xneon
P = 8.87 kPa / (225 / (225 + 320 + 175))
P = 8.87 kPa / 0.3125 = 28.384 kPa

Applying the ideal gas law, we can calculate volume:
PV = nRT
V = nRT / P

n = 225 mg ( 1 mmol / 20.18 mg) + 320 mg ( 1 mmol / 16.05 mg ) + 175 mg ( 1 mmol / 39.95 mg ) = 35.47 mg = 35467.0 g

V = 35467.0 (8.314) (300) / (28384) = 3116.68 m^3
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