Removing of Some Errors for Measuring the Specific Latent Heat of Vaporization of Water in the Lab

This paper discusses on typical errors of measuring the specific latent heat of vaporizationof water in the lab of schools or university. This experiment is very sensitive to the mass ofvapour that arrives inside the calorimeter. In general what enters the calorimeter is composed ofvapour, cloud and even water drops. The usual methods for this measurement don’t prevent fogand water, thus don t enter pure vapour inside the calorimeter; therefore these methods haveerrors that we can prevent them simply. In this paper, we report the method for modifying thepath of vapour towards calorimeter that with a high reliability, the mass of water and cloud thatenter the system decreases considerably and very pure vapour of water enters the system.

کلیدواژه ها:

Specific Latent Heat of Vaporization ، Boiling Point