Combustion chamber for quantitative synthesis of water

A capillary tube is used to direct the hydrogen to the arc, where it burns in the atmosphere. The gases used here are introduced into the reaction vessel under slight pressure by means of gas syringes, thus permitting quantitative analyses. The water created here condenses on the chamber wall and is clearly visible. The combustion chamber itself is so light in weight as to allow for gravimetric determination of its mass. When 50 ml of H₂ and 25 ml of O₂are consumed one can detect an increase in weight of exactly 20.0 mg (at standard temperature and pressure).

Application examples

• Synthesis of water from the constituent elements
  (continuous combustion, the inverse of water electrolysis)
• Synthesis of HCI from the constituent elements