Eudiometer is an instrument which measure the change in the volume of gas (or mixture of gases) as a consequence of chemical or physical processes.

Eudiometer is an instrument which measure the change in the volume of gas (or mixture of gases) as a consequence of chemical or physical processes.

You could use a delivery tube connected to an eudiometer filled with water. The open end of the eudiometer needs to be underwater. The amount of displaced water is the amount of gas produced by the reaction.

The pressure of the gases in the eudiometer tube must equal the atmospheric pressure. If the water levels are not at he same height, then this is not the case. Therefore, in order to account for this difference and get accurate results, you must subtract the water levels and convert to mmHg.

A eudiometer is a device used to measure the volume of a gas that changes with a chemical reaction. It is used by placing the open end in water and then measuring the gas change on the side.