Which of these chemical equations describes a precipitation reaction? A)2H₂(g)+ O₂(g)→ 2H₂O(l) B)CaBr₂(aq)+ H₂SO₄ (aq)→ CaSO₄(s)+ 2HBr(g) C)2KNO₃(s)→ 2KNO₂(s)+ O₂(g) D)2KBr(aq)+ Cl₂(g)→ 2KCl(aq)+ Br₂(l) E)2Al(s)+ 3H₂SO₄(aq)→ Al₂(SO₄)3(aq)+ 3H₂(g)

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In this equation, CaBr2(aq) reacts with H2SO4(aq) to form CaSO4(s) and 2HBr(g). The formation of a solid (CaSO4) indicates a precipitation reaction.

Which of These Chemical Equations Describes a Precipitation Reaction