Label each of the following as an acid, base or salt, explainingyour answer: a.

Question

Label each of the following as an acid, base or salt, explainingyour answer:

           a.        H3PO4                                                         b.         NaOH

           c.        Mg(NO3)2                                                   d.        Zn(OH)2

           e.        HC3H3O2

Explanation / Answer

a) Acid. It releases Hydrogen in water: H3PO4 + H2O -> 3(H3O+) +PO4-. H3O+, the hydronium ion, is the same as writing H+. b) Base. Releases OH-: NaOH + H2O -> Na+ + OH- c) Salt. Metal Magnesium and part of HNO3, nitric acid. d) Base. For the same reason as in b) e) Acid. It's acrylic acid, with structure H2C=CHCOOH. And itreleases hydrogen in solution, like a)

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