To determine which reactions are combination or synthesis reactions, we need to identify if two or more reactants combine to form a single product. Here are the reactions:
1) N₂ + 3H₂ → 2NH₃ - This is a combination or synthesis reaction because nitrogen gas (N₂) and hydrogen gas (H₂) react to form ammonia (NH₃).
2) 2H₂ + O₂ → 2H₂O - This is not a combination or synthesis reaction. It is a combustion reaction where hydrogen gas (H₂) and oxygen gas (O₂) react to form water (H₂O).
3) 2Na + Cl₂ → 2NaCl - This is a combination or synthesis reaction because sodium (Na) and chlorine (Cl₂) combine to form sodium chloride (NaCl).
4) Mg + 2HCl → MgCl₂ + H₂ - This is not a combination or synthesis reaction. It is a single displacement or replacement reaction where magnesium (Mg) reacts with hydrochloric acid (HCl) to form magnesium chloride (MgCl₂) and hydrogen gas (H₂).
Therefore, the reactions 1) and 3) are combination or synthesis reactions.
Which of the reactions below are combination, or synthesis, reactions? (A synthesis reaction is where two or more reactants combine to form a single product.)
1 answer