Prasad has a saturated alcohol X of chemical formula C 4 H 9 OH.
(a) Write the chemical formula of a member Y that comes two places after X in the homologous series and state by how much will its molecular mass differ from that of X.
The homologous series is a series of organic compounds having similar structures and similar chemical properties.
The homologous series for C 4 H 9 OH would have an increasing number of -CH 2 in the formula.
Y would hence have 2 -CH 2 groups more than X.
Y: C 6 H 13 OH
Molecular mass of Y = X + molecular mass of 2 -CH 2 groups
Thus it differs by 28 amu .