Solution: The drawing below represents a mixture of three different gases.Rank the three components in order of decreasing partial pressure. 

Problem

The drawing below represents a mixture of three different gases.

A diagram shows a mixture containing five blue, two red, and three yellow gas molecules.

Rank the three components in order of decreasing partial pressure. 

Solution
  • Partial pressure is relative to the number of moles or molecules gases. 
  • Raoult's law confirms this where:

Pgas = (total P of gases)(mole fraction of gas)

  • It can be seen that P of gas directly proportional to the mole fraction of the gas, the higher the # of moles, the higher the partial pressure
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