The formula to calculate the total pressure is:
\[ \text{P}_{\text{total}} = \sum \text{P}_{\text{partials}} \]
Where:
Total pressure is the sum of the partial pressures of each individual gas in a mixture. It represents the overall pressure exerted by the gas mixture. The concept is based on Dalton's Law of Partial Pressures, which states that the total pressure exerted by a mixture of non-reacting gases is equal to the sum of the partial pressures of each individual gas in the mixture.
Let's assume we have three gases with the following partial pressures:
Using the formula to calculate the total pressure:
\[ \text{P}_{\text{total}} = 1.2 + 0.8 + 0.5 = 2.5 \text{ atm} \]
The total pressure is 2.5 atm.