Final answer:
The reaction CaCl₂(aq) + H₂SO₄(aq) → CaSO₄(s) + 2 HCl(aq) is classified as a double displacement reaction, where ions from two compounds exchange places to form new compounds.
Step-by-step explanation:
The student question asks to classify the reaction represented by the equation CaCl₂(aq) + H₂SO₄(aq) → CaSO₄(s) + 2 HCl(aq).
This reaction involves two aqueous solutions reacting to form a solid precipitate, calcium sulfate (CaSO₄), and hydrochloric acid in solution. Such a reaction is a typical example of a double displacement reaction, also known as a metathesis reaction, where the cations and anions of two different compounds swap places, resulting in the formation of two new compounds. One of these compounds is typically a solid precipitate, a gas, or a molecular compound, such as water.