Leslie learned the classes of reactions. Classify each of the following reactions in as many ways as possible.

Question

 a) S₈(s) + 8O₂(g) --> 8SO₂(g)

b) KOH(aq) + HCl(aq) --> H₂O(l) + KCl(aq)

c) BaCl₂(aq) + Na₂SO₄(aq) --> BaSO₄(s) + 2NaCl(aq)

Answer 1

a) S₈(s) + 8O₂(g) --> 8SO₂(g) ... combustion, synthesis, redox

b) KOH(aq) + HCl(aq) --> H₂O(l) + KCl(aq) ... Neutralization, double displacement

c) BaCl₂(aq) + Na₂SO₄(aq) --> BaSO₄(s) + 2NaCl(aq) ... double displacement, precipitation