A 5.6 g sample of an unknown alkene reacts completely with 16 g of Bromine. Identify the alkene.
- Butene
- Ethene
- Propene
- Pentene
📝 Batafsil tushuntirish
CₙH₂ₙ + Br₂ → CₙH₂ₙBr₂.n(Br₂) = 16 / 160 = 0.1 mol.
M(alkene) = 5.6 / 0.1 = 56 g/mol.
14n = 56, so n = 4.
The alkene is Butene (C₄H₈).