The empirical formula : C₁₂H₄F₇
The molecular formula : C₂₄H₈F₁₄
Further explanation
mol C (MW=12 g/mol)
[tex]\tt \dfrac{18.24}{12}=1.52[/tex]
mol H(MW=1 g/mol) :
[tex]\tt \dfrac{0.51}{1}=0.51[/tex]
mol F(MW=19 g/mol)
[tex]\tt \dfrac{16.91}{19}=0.89[/tex]
mol ratio of C : H : O =1.52 : 0.51 : 0.89=3 : 1 : 1.75=12 : 4 : 7
Empirical formula : C₁₂H₄F₇
(Empirical formula)n=molecular formula
( C₁₂H₄F₇)n=562 g/mol
(12.12+4.1+7.19)n=562
(281)n=562⇒ n =2
Molecular formula : C₂₄H₈F₁₄
