Question

5)

Determine the empirical and molecular formula of a compound composed of 1824 g Catoon,
0.51 g Hydrogen, and 16.91 g Fluorine has a molar mass 5620 ymol.

Answer 1

The empirical formula : C₁₂H₄F₇

The molecular formula : C₂₄H₈F₁₄

Further explanation

mol C (MW=12 g/mol)

`\tt (18.24)/(12)=1.52`

mol H(MW=1 g/mol) :

`\tt (0.51)/(1)=0.51`

mol F(MW=19 g/mol)

`\tt (16.91)/(19)=0.89`

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