Arigid tank is divided into two equal volumes. one side contains 2 kmol of nitrogen n2 at 500 kpa while the other side contains 8 kmol of co2 at 200 kpa. the two sides are now connected and the gases are mixed and forming a homogeneous mixture at 250 kpa. find the partial pressure of the co2 in the final mixture.

The partial pressure of the in the final mixture is 200 kPa.

Explanation:

Pressure of nitrogen gas when the two tanks are disconnected = 500 kPa

Pressure of the carbon-dioxide gas when the two tanks are disconnected = 200 kPa

Moles of nitrogen gas =

Moles of carbon dioxide gas =

After connecting both the tanks:

The total pressure of the both gasses in the tank = p = 250 kPa

According to Dalton' law of partial pressure:

Total pressure is equal to sum of partial pressures of all the gases

Partial pressure of nitrogen =

Partial pressure of carbon dioxide=

The partial pressure of the in the final mixture is 200 kPa.