Question

Suppose a balloon contains a mixture of helium nitrogen and oxygen gas is a pressure exerted by the mixture is 101.2 KPA the partial pressure of helium is 80.1 KPA and the part of coal pressure of nitrogen is 16.2 KPA what is the partial pressure of oxygen in the balloon

giving lots of points

Answer 1

4.9 kPa

Step-by-step explanation:

Dalton's law of partial pressures states that the total pressure of a mixture of gases is the sum of the partial pressures of the individual gases.

In other words:

`\displaystyle P_T = P_\text{O$_2$} + P_\text{N$_2$} + P_\text{He}`

The total pressure is 101.1 kPa. The partial pressure of He is 80.1 kPa. The partial pressure of N₂ is 16.2 kPa. Substitute and solve for O₂:

`\displaystyle \begin{aligned} (101.2\text{ kPa}) & = P_\text{O$_2$} + (16.2\text{ kPa}) + (80.1\text{ kPa}) \\ \\ P_\text{O$_2$} & = 4.9\text{ kPa}\end{aligned}`

In conclusion, the partial pressure of oxygen in the balloon is 4.9 kPa.