The total pressure of a mixture of ideal gases is the sum of partial pressures. This is ______ law of partial pressures.

Dalton's

The correct answer is option 1. Dalton's.

The statement describes Dalton's law of partial pressures.

Dalton's law of partial pressures states that the total pressure exerted by a mixture of non-reacting gases is equal to the sum of the partial pressures of the individual gases in the mixture. This law is applicable to ideal gases and assumes that the gases behave independently of each other. It is named after the English chemist and physicist John Dalton, who formulated it in the early 19th century.