$AB_4$  માટે : અણુભાર $ = a + 4b$   

$\Delta {T_f}\,\, = \,\,\frac{{1000\,\, \times \,\,K\,\, \times \,\,w}}{{m\,\, \times \,\,\,W}}$ દ્રારા

${\text{A}}{{\text{B}}_{\text{2}}}\,$ માટે $ = \,\,\frac{{1000\,\, \times \,\,5.1\,\, \times \,\,1}}{{\left( {a\,\, + \,\,\,2b} \right)\,\, \times \,\,20}}$

$a\,\, + \;\,2b\,\, = \,\,110.87\,\,\,\,\,\,\,\,..........\left( 1 \right)$

સમીકરણ $ (1) $ અને $(2) $  દ્વારા $ a = 25.59; \,\,b = 42.64$

$A{B_{4\,}}$ માટે  $\,:\,1.3\,\, = \,\,\frac{{1000\,\, \times \,\,5.1\,\, \times \,\,1}}{{\left( {a\,\, + \,\,4b} \right)\,\, \times \,\,20}}$

$a\,\,\, + \;\,4b\,\, = \,\,196.15\,\,\,\,\,\,..........\left( 2 \right)$