Question

A gas mixture contains oxygen, nitrogen, and helium. The partial pressures are:

Po, = 20.0 kPa, PN, = 46.7 kPa and Phe = 26.7 kPa.
What is the total pressure of the gas?
A. 46.7 kPa
B. 6.70 kPa
C. 2.49 x 104 kPa
D. 93.4 kPa

Answer 1

93.4 kPA

Step-by-step explanation:

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Answer 2

93.4 kPa

Step-by-step explanation:

• According to Dalton law of partial pressure, the total pressure of a mixture of gases is equivalent to the sum of partial pressures of individual gases.

• That is, P(total) =P₁ + P₂ +P₃ , where P₁, P₂ and P₃ are partial pressures of individual gases.

In this case,

P(Po) = 20.0 kPa

P(PN) = 46.7 kPa

P(Phe) = 26.7 kPa

Therefore, the total partial pressure will be;

P(total) = 20.0 kPa + 46.7 kPa + 26.7 kPa

= 93.4 kPa

Therefore, the total pressure of the ga mixture is 93.4 kPa