What happens to the partial pressure of oxygen in a sample of air if the temperature is increased? It increases. It decreases. It stays the same. The change cannot be determined.

The partial pressure of oxygen in a sample of air increases if the temperature is increased.

Answer: Option 1

Explanation:

According to Guy-Lussac's law, at constant volume, pressure exhibited by the gas molecules will be directly proportional to the temperature of the gas molecules. It is also known that pressure of mixture of gas molecules is the sum of partial pressure of each gas molecule in the mixture.

If the temperature increases, the partial pressure and the pressure of the mixture of gas also tend to increase. As it can be seen that at higher altitudes, the low temperature leads to the decrease in oxygen's partial pressure in the air.

So, it can also be concluded that temperature increases the oxygen's partial pressure in air increases.