What is Daltons Law?
Dalton’s law is a principle used in chemistry to predict the concentration of mixed gases in terms of pressure. Also known as Dalton’s law of partial pressure, it states that the sum of exerted pressure of the whole mixture of gases is equal to the sum of all pressures in the mixture. Introduced in the early 1800s by John Dalton, an English chemist and physicist, Dalton’s law applies to ideal gases as an absolute empirical law and not real gases. The reason for this is due to the elastic properties of the molecules involved in the former, as well as low particle volume. However, the margin of error when applied to real gases is generally considered minimal in most cases. Mathematically, Dalton’s law can be expressed as P(1) + P(2) + …P(n), where P = Pressure. As the law observes, the combined pressure of each gas component in the mixture is equal to the total pressure of each gas in the entire mixture. The measurement to represent pressure is expressed in kilopascal units and written a
Dalton’s Law states that the total pressure exerted by a mixture of gases is equal to the sum of the pressure of each of the different, gases making up the mixture – each gas acting as if it alone was present and occupying the total volume. This same law causes oxygen toxicity and enhances the role of contaminant gases such as carbon monoxide and hydrocarbons.
