CHM110H5 Chapter Notes - Chapter 5: Jan Baptist Van Helmont, Ideal Gas Law, Franciscus Mercurius Van Helmont
Document Summary
Flemish physician jan baptista van helmont- first person to attempt a scientific study of vapors produced in chemical reactions. Van helmont studied a gas he obtained from burning wood ( gas slylvestre ) . Performed experiments that tried to prove that air in the atmosphere exerts pressre. Designed the first barometer by filing a tube that was filled with mercury and placed it in a dish with mercury in it. Observed a column of mercury (~760mm) always remained -> result of the pressure of the atmosphere. Otto von guenicke invented an air pump (vacuum pump) Use columns of mercury of its high density. The most commonly used units for pressure are based on the height of the mercury the gas can support. 1 atm = 760 mmhg = 760 torr. The gas laws of boyle, charles and avogadro. Pv = k, where k is the constant at a specific temperature for a given sample of.
