Thermal Dissociation in Abnormal Densities of Gases

Thermal dissociation explains abnormally low molecular mass obtained for many elements and compounds. Well known examples are the dissociation of Dinitrogen tetroxide (N2O4), Ammonium chloride......

Molecular Dissociation in Abnormal Densities of Gases

Molecular dissociation Upon heating, the density of aluminum chloride vapour decreases and at 800°C the density corresponds to the formula Aluminium chloride (AlCl3), i.e., one......

Molecular Association in Abnormal Densities of Gases

Molecular association is an attractive interaction between two molecules that results in a constant association in which the molecules are in close propinquity to each......

Abnormal Densities of Gases

Abnormal Densities of Gases: Molecular Association and Dissociation The density of gases depends upon the temperature. Measurements of densities of vapours have served to determine......

The Buoyancy Method in Density of Gases

The buoyancy method This is a very accurate method of determining gas density. A very small quantity of the gas is sufficient for measurement by......

Method of Limiting Density in Density of Gases

Method of limiting density The methods: Regnault’s method, Dumas method, Hofmann’s method, Victor Meyer’s method and the buoyancy method are based on the assumption that......

Victor Meyer’s Method in Density of Gases

Victor Meyer’s method This is perhaps the most common method for the determination of the molecular mass of substances which are liquid or solid at......

Hofmann’s Method in Density of Gases

Hofmann’s method In this method a known mass of the liquid is allowed to evaporate in the vacuous space above the mercury column in a......

Regnault’s Method in Density of Gases

Regnault’s method The method is based on the measurement of mass of a known volume of gas under definite condition of temperature and pressure. Two......

Dumas’ Method in Density of Gases

Dumas’ method It is used for substances which are liquid at room temperature. The apparatus is shown in (Figure: Dumas’ method for determination of density......

Application of the Principle of Adiabatic Demagnetization

The principle of cooling by adiabatic demagnetization was suggested by P. Debye (1926) and W. F. Giauque (1927). When a substance is placed in a......

Density of Gases in Molecular Mass

Density of Gases in Molecular Mass The density of a gas is defined in Physical Chemistry as the mass in g of 1 L of......