Question

Molecular mass of a volatile organic solid can be determined by :

• A. Silver chloride method
• B. Platinic chloride method
• C. Victor Mayers method
• D. Kjeldahls method

Answer 1

The correct option is C Victor Mayers method

In the Victor Meyer’s method a known mass of a volatile liquid or solid is converted into its vapour by heating in a Victor-Meyer's tube. The vapour displaces its own volume of air. The volume of air displaced by the vapour is measured at the experimental temperature and pressure. The volume of the vapour at s.t.p is then calculated. From this the mass of $2.24\ast {10}^{-2}{m}^3$ of the vapour at S.T.P. is calculated. This value represents the molecular mass of the substance.