Question 22.3: What is the molecular formula of (a) the alkane, alkene, and...
What is the molecular formula of
(a) the alkane, alkene, and alkyne containing six carbon atoms?
(b) the alkane containing ten hydrogen atoms?
STRATEGY
Apply the formulas:
C_{n}H_{2n+2} for alkanes
C_{n}H_{2n} for alkenes
C_{n}H_{2n-2} for alkynes
| alkane: n = 6; H atoms = 2n + 2 = 2(6) + 2 = 14 → C_{6}H_{14} alkene: n = 6; H atoms = 2n = 2(6) = 12 → C_{6}H_{12} alkyne: n = 6; H atoms = 2n – 2 = 2(6) – 2 = 10 → C_{6}H_{10} |
(a) Six C atoms |
| alkane with 10 H atoms: 2n + 2 = 10; n = 4 → C_{4}H_{10} | (b) Alkane with ten H atoms |
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