Question 47
Introduction to Organic ChemistryA hydrocarbon has an empirical formula CH and a vapour density of 39. Determine its molecular formula. [C = 12, H = 1]
- A.C2H6
- B.C3H8
- C.C3H4
- D.C6H6
Show the answer and explanation
Answer: D (C6H6)
Explanation
Molar mass = 2 × 39 = 78. (CH)n: 13n = 78, so n = 6 and the formula is C6H6.