What is the empirical formula for perfluoropropane if the compound contains 81% fluorine and 19% carbon by mass? A)CF₃ B)C₂F₄ C)C₃F₈ D)C₆F₁₀

Question

Quizplus · Accepted Answer

To find the empirical formula, we need to determine the mole ratio of carbon to fluorine. 
Assume we have 100 g of perfluoropropane:
- 81 g of fluorine would correspond to (81 g / 18.998 g/mol = 4.052 mol) of F
- 19 g of carbon would correspond to (19 g / 12.011 g/mol = 1.582 mol) of C
Now, we need to divide both numbers by the smaller one to obtain a mole ratio close to whole numbers:
4.052/1.582 ≈ 2.56/1
1.582/1.582 = 1/1
So, the empirical formula is C2F5, which corresponds to Choice C.

What Is the Empirical Formula for Perfluoropropane If the Compound