Question

question 4 of 14
write the balanced chemical equation for the reaction shown.
= no = o₂ = no₂
balanced equation:

Explanation:

Step1: Count reactant molecules

Reactants: 8 NO, 4 O₂

Step2: Count product molecules

Products: 8 NO₂

Step3: Write unbalanced equation

$\text{NO} + \text{O}_2
ightarrow \text{NO}_2$

Step4: Balance atoms (N then O)

First balance N: 2 NO + O₂ → 2 NO₂. Verify: 2 N on left/right; 2+2=4 O on left, 4 O on right. Scale to match the diagram counts (multiply by 4): $8\text{NO} + 4\text{O}_2 = 8\text{NO}_2$, then simplify to the smallest whole number ratio by dividing all coefficients by 4.

Answer:

$\boldsymbol{2\text{NO} + \text{O}_2 = 2\text{NO}_2}$