The pressure in an automobile tire filled with air is 245.0 kPa. If Po2 = 51.3 kPa, Pco2 = 0.10 kPa, and P-others = 2.3 kPa, what is Pn2?

PN₂ = 191.3 Kpa

Explanation:

Given dа ta:

Total pressure of tire = 245.0 Kpa

Partial pressure of PO₂ = 51.3 Kpa

Partial pressure of PCO₂ = 0.10 Kpa

Partial pressure of others = 2.3 Kpa

Partial pressure of PN₂ = ?

Solution:

According to Dalton law of partial pressure,

The total pressure inside container is equal to the sum of partial pressures of individual gases present in container.

Mathematical expression:

P (total) = P₁ + P₂ + P₃ + ... + Pₙ

Now we will solve this problem by using this law.

P (total) = PO₂ + PCO₂ + P (others) + PN₂

245 Kpa = 51.3 Kpa + 0.10 Kpa + 2.3 Kpa + PN₂

245 Kpa = 53.7 Kpa + PN₂

PN₂ = 245 Kpa - 53.7 Kpa

PN₂ = 191.3 Kpa