Which of the Following Represents a Precipitation Reaction
A) 2H₂(g) $\rarr$

Multiple Choice

Which of the following represents a precipitation reaction

A) 2H₂(g) + O₂(g) $\rarr$ 2H₂O(l)
B) CaBr₂(aq) + H₂SO₄(aq) $\rarr$ CaSO₄(s) + 2HBr(g)
C) 2KNO₃(s) $\rarr$ 2KNO₂(s) + O₂(g)
D) 2KBr(aq) + Cl₂(g) $\rarr$ 2KCl(aq) + Br₂(l)
E) 2Al(s) + 3H₂SO₄(aq) $\rarr$ Al₂(SO₄) ₃(aq) + 3H₂(g)