5. Classification & Balancing of Chemical Reactions

Reaction of A (green spheres) with B (blue spheres) is shown in the following diagram:

Which equation best describes the reaction?a. A₂ + 2 B → A₂B₂ b. 10 A + 5 B₂ → 5 A₂B₂c. 2 A + B₂ → A₂B₂d. 5 A + 5 B₂ → 5 A₂B₂

When sodium metal is placed in water, the following change occurs: Sodium, Na (s) + Water, H2O (l) → Hydrogen, H₂ (g) + Sodium hydroxide, NaOH (aq)a. Identify the reactants and products and their physical states