determining molecularity

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..

A solution of known concentration of oleic acid in alcohol is prepare..

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 metho..

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 metallic silve..

Avagadro's law helps us to determine the molecular formula of gases like ammonia, carbon dioxide, sulphur dioxide etc. Exampl..

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..

* 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 formul..

Molecular formula is the chemical formula, which represents the actual numbers of atoms of each element present in a compou..

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 = 180..

Empirical formula mass = (1 x 12 amu + 2 x 1 amu + 1 x 16 amu) = 30 amu Molecular mass = 180 amu Hence, Therefore, Molecular formulae of a compound = 6 x CH 2 O = C 6 H 1 2 O 6 9. A compound (molecular mass 147) contains 49.0 % carbon and 2.72% hydrogen. 2.561 mg ..