A. Nitrogen gas
B. Oxygen gas
C. Hydrogen gas
D. Sulphur dioxide gas
C. Hydrogen gas
When aluminum reacts with dilute sulfuric acid (H₂SO₄), it undergoes a single displacement reaction. Here’s the balanced chemical equation for this reaction:
2Al(s) + 3H₂SO₄(aq) → 3H₂(g) + Al₂(SO₄)₃(aq)
As you can see, the reaction produces hydrogen gas (H₂) and aluminum sulfate (Al₂(SO₄)₃).