Question

write the chemical equations for reach equation described below. include physical states. balance the equations.

1. ch₄(g) + o₂(g) →____ + ____
2. c₂h₆(g) + o₂(g) →____ + ____
3. ch₃oh(l) + o₂(g) →____ + ____
4. combustion of liquid propane (c₃h₈)
5. combustion of liquid octane (c₈h₁₈)
6. combustion of liquid pentanol (c₅h₁₁oh)
7. c₅h₁₂(l) + o₂(g) → co(g) + h₂o(g)
8. incomplete combustion of cyclohexane, c₆h₁₂.
9. complete combustion of sucrose, c₁₂h₂₂o₁₁.
10. incomplete combustion of sucrose.

Explanation:

Step1: Complete and balance CH₄ combustion

$$\text{CH}_4(g) + 2\text{O}_2(g) ightarrow \text{CO}_2(g) + 2\text{H}_2\text{O}(g)$$

Step2: Complete and balance C₂H₆ combustion

$$2\text{C}_2\text{H}_6(g) + 7\text{O}_2(g) ightarrow 4\text{CO}_2(g) + 6\text{H}_2\text{O}(g)$$

Step3: Complete and balance CH₃OH combustion

$$2\text{CH}_3\text{OH}(l) + 3\text{O}_2(g) ightarrow 2\text{CO}_2(g) + 4\text{H}_2\text{O}(g)$$

Step4: Balance C₃H₈ combustion

$$\text{C}_3\text{H}_8(l) + 5\text{O}_2(g) ightarrow 3\text{CO}_2(g) + 4\text{H}_2\text{O}(g)$$

Step5: Balance C₈H₁₈ combustion

$$2\text{C}_8\text{H}_{18}(l) + 25\text{O}_2(g) ightarrow 16\text{CO}_2(g) + 18\text{H}_2\text{O}(g)$$

Step6: Balance C₅H₁₁OH combustion

$$2\text{C}_5\text{H}_{11}\text{OH}(l) + 15\text{O}_2(g) ightarrow 10\text{CO}_2(g) + 12\text{H}_2\text{O}(g)$$

Step7: Balance C₅H₁₂ incomplete combustion

$$2\text{C}_5\text{H}_{12}(l) + 11\text{O}_2(g) ightarrow 10\text{CO}(g) + 12\text{H}_2\text{O}(g)$$

Step8: Balance C₆H₁₂ incomplete combustion (assuming CO product)

$$\text{C}_6\text{H}_{12}(l) + 6\text{O}_2(g) ightarrow 6\text{CO}(g) + 6\text{H}_2\text{O}(g)$$

Step9: Balance sucrose complete combustion

$$\text{C}_{12}\text{H}_{22}\text{O}_{11}(s) + 12\text{O}_2(g) ightarrow 12\text{CO}_2(g) + 11\text{H}_2\text{O}(g)$$

Step10: Balance sucrose incomplete combustion (assuming CO product)

$$\text{C}_{12}\text{H}_{22}\text{O}_{11}(s) + 6\text{O}_2(g) ightarrow 12\text{CO}(g) + 11\text{H}_2\text{O}(g)$$

Answer:

1. $\text{CH}_4(g) + 2\text{O}_2(g)

ightarrow \text{CO}_2(g) + 2\text{H}_2\text{O}(g)$

1. $2\text{C}_2\text{H}_6(g) + 7\text{O}_2(g)

ightarrow 4\text{CO}_2(g) + 6\text{H}_2\text{O}(g)$

1. $2\text{CH}_3\text{OH}(l) + 3\text{O}_2(g)

ightarrow 2\text{CO}_2(g) + 4\text{H}_2\text{O}(g)$

1. $\text{C}_3\text{H}_8(l) + 5\text{O}_2(g)

ightarrow 3\text{CO}_2(g) + 4\text{H}_2\text{O}(g)$

1. $2\text{C}_8\text{H}_{18}(l) + 25\text{O}_2(g)

ightarrow 16\text{CO}_2(g) + 18\text{H}_2\text{O}(g)$

1. $2\text{C}_5\text{H}_{11}\text{OH}(l) + 15\text{O}_2(g)

ightarrow 10\text{CO}_2(g) + 12\text{H}_2\text{O}(g)$

1. $2\text{C}_5\text{H}_{12}(l) + 11\text{O}_2(g)

ightarrow 10\text{CO}(g) + 12\text{H}_2\text{O}(g)$

1. $\text{C}_6\text{H}_{12}(l) + 6\text{O}_2(g)

ightarrow 6\text{CO}(g) + 6\text{H}_2\text{O}(g)$

1. $\text{C}_{12}\text{H}_{22}\text{O}_{11}(s) + 12\text{O}_2(g)

ightarrow 12\text{CO}_2(g) + 11\text{H}_2\text{O}(g)$

1. $\text{C}_{12}\text{H}_{22}\text{O}_{11}(s) + 6\text{O}_2(g)

ightarrow 12\text{CO}(g) + 11\text{H}_2\text{O}(g)$