methods to determine molecular mass

The molecular mass of a compound is essential to determine its molecular formula. Molecular mass of an organic compound is determined by a number of methods..

By silver salt method - Silver salt method is used for determining the molecular masses of carboxylic acids. This method is based on the fact that they form insoluble silver salts, which upon heating decompose to leave a residue of metalli..

The molecular mass of a compound is essential to determine its molecular formula. Molecular mass of an organic compound is determined by a number of methods..

Determination of the Molecular Formula of a Compound - The empirical formula of the compound is written. The empirical formula mass is calculated by adding the atomic masses of all atoms present in the empirical formula. The molecular mass..

Example: 21 - An organic compound has the following percentage composition: C= 40%, H = 6.66%, O = 53.33%. Find its molecular formula (Relative atomic mass of C=12, H=1, O=16 and Relative molecular mass of the compound = 18..

To Determine Molecular Size - A solution of known concentration of oleic acid in alcohol is prepared. Let 1 cm 3 of oleic acid be dissolved in 500 cm 3 of alcohol to get concentration. Let n drops of this solution be poured on a water surface contained in a flat and broad vessel..

The molecular mass of a substance is the relative mass of its molecule as compared with the mass of a 12 C atom taken as 12-units. It indicates the number of times; one molecule of the substance is heavier than at..

A known mass W B of the non-volatile solute is dissolved in a known mass (W A ) of the volatile solvent to prepare a dilute solution and relative lowering of vapor pressure is determined experimentally. Knowing the molecular mass (M A ) of the sol..

Molecular mass expressed in grams is numerically equal to gram molecular mass of the substance.Molecular mass of O 2 = 32Gram molecular mass of O 2 = 32gGram molecular mass is the relative molec..