Dalton's Law

Gibbs'-Dalton's law of partial pressure

The total pressure of a mixture of gases is made up by the sum of the partial pressures of the components in the mixture as known from Gibbs'-Dalton's Law of Partial Pressures:

  • The total pressure exerted by a mixture of gases is the sum of the partial pressures of the individual gases

The total pressure in a mixture of gases can be expressed as:

p = Σpi         (1)


p = the pressure of the mixture

pi = partial pressure of gas i

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