Tue September 13, 2011 By: Stuti Jain

How is Daltons Law of partial pressure helpful in calculating the partial pressure of gases in a container?

Expert Reply
Tue September 13, 2011

"The total pressure of a mixture of gases equals the sum of the pressures that each would exert if it were present alone."

Ptotal = P1 + P2 + . . . Pn

  • Pt is the total pressure of a sample which contains a mixture of gases
  • P1, P2, P3, etc. are the partial pressures (in the same units) of the gases in the mixture
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