Question

Classify the following reactions as either synthesis or decomposition:

1) SO₃ (g) + H₂O (l) → H₂SO₄ (aq)
2) NH₄NO₃ (s) → N₂O (g) + 2 H₂O (g)
3) A + B → C
4) 2 H₂O → 2 H₂ + O₂
5) 3 Fe (s) + O₂ (g)→ Fe₂O₃ (s)
6) C → A + B

Answer 1

The reactions are classified into synthesis or decomposition: 1) Synthesis 2) Decomposition 3) Synthesis 4) Decomposition 5) Synthesis 6) Decomposition.

Step-by-step explanation:

Let's classify the given reactions as either synthesis (also known as composition), or decomposition reactions:

1. SO₃ (g) + H₂O (l) → H₂SO₄ (aq) is a synthesis reaction, where sulfur trioxide and water combine to form sulfuric acid.
2. NH₄NO₃ (s) → N₂O (g) + 2 H₂O (g) is a decomposition reaction, where ammonium nitrate decomposes into nitrous oxide and water.
3. A + B → C is a general form of a synthesis reaction, where two reactants combine to form one product.
4. 2 H₂O → 2 H₂ + O₂ is a decomposition reaction, where water decomposes into hydrogen and oxygen gas.
5. 3 Fe (s) + O₂ (g)→ Fe₂O₃ (s) is a synthesis reaction, where iron and oxygen combine to form iron(III) oxide.
6. C → A + B is a general form of a decomposition reaction, where one reactant breaks down into two products.

Final answer:

1. Synthesis
2. Decomposition
3. Synthesis
4. Decomposition
5. Synthesis
6. Decomposition