Question

9 fill in the blank 1 point balance the following chemical equation type your answer... c₂h₅oh + type your answer... o₂ ---> type your answer... co₂ + type your answer... h₂o make sure to include the 1’s if necessary.

Explanation:

Step1: Balance carbon atoms

There are 2 C in $\text{C}_2\text{H}_5\text{OH}$, so add coefficient 2 to $\text{CO}_2$:
$\text{C}_2\text{H}_5\text{OH} + \text{O}_2
ightarrow 2\text{CO}_2 + \text{H}_2\text{O}$

Step2: Balance hydrogen atoms

There are 6 H in $\text{C}_2\text{H}_5\text{OH}$, so add coefficient 3 to $\text{H}_2\text{O}$:
$\text{C}_2\text{H}_5\text{OH} + \text{O}_2
ightarrow 2\text{CO}_2 + 3\text{H}_2\text{O}$

Step3: Balance oxygen atoms

Right side has $2\times2 + 3\times1 = 7$ O. Left side has 1 O in $\text{C}_2\text{H}_5\text{OH}$, so $\text{O}_2$ needs to provide 6 O, giving it coefficient 3:
$\text{C}_2\text{H}_5\text{OH} + 3\text{O}_2
ightarrow 2\text{CO}_2 + 3\text{H}_2\text{O}$

Step4: Verify all atoms balanced

C: 2=2; H:6=6; O:1+6=7, 4+3=7. All balanced.

Answer:

1, 3, 2, 3