(Dalton’s Law of Partial Pressures)
A 6.75 g sample of potassium chlorate (KClO4) is heated and decomposes into potassium chloride and oxygen gas. The oxygen is collected over water in a lab with an atmospheric pressure of 758.6 torr. If the system is at 26°C and 1.00 L of gas is collected, what is the partial pressure of the wet oxygen gas (in torr)? How many moles of oxygen are collected? Vapor pressure of water at 26°C is 25.2 torr.
