Answer
๐ฅ Combustion Reactions of Alkanes
What is Combustion?
Combustion is the reaction of a hydrocarbon with oxygen (Oโ) that produces carbon dioxide (COโ), water (HโO), and energy. The general form is:
CโHแตง + Oโ โ COโ + HโO
(a) Combustion of Undecane (CโโHโโ)
Step-by-Step Balancing
- Carbon: 11 โ 11 COโ
- Hydrogen: 24 โ 12 HโO
- Oxygen: (11ร2) + (12ร1) = 34 โ 17 Oโ
CโโHโโ + 17Oโ โ 11COโ + 12HโO
(b) Combustion of Ethylcyclobutane (CโHโโ)
Step-by-Step Balancing
- Carbon: 6 โ 6 COโ
- Hydrogen: 12 โ 6 HโO
- Oxygen: (6ร2) + (6ร1) = 18 โ 9 Oโ
CโHโโ + 9Oโ โ 6COโ + 6HโO
Summary Table
| Alkane | Balanced Combustion Equation |
|---|---|
| Undecane (CโโHโโ) | CโโHโโ + 17Oโ โ 11COโ + 12HโO |
| Ethylcyclobutane (CโHโโ) | CโHโโ + 9Oโ โ 6COโ + 6HโO |