CHM 1025C Sample Pretest Name:_____________________

Module Eight: Part G Rewriting Equations Ionically 10 points

Rewrite the following (unbalanced) equations ionically, cancel spectator ions and then balance the net ionic reactions. Show as ions: soluble salts and strong acids and strong bases; leave as molecules/formula units insoluble salts, weak acids, covalent molecules. Strong acids are: Perchloric Acid; Hydrochloric Acid; Nitric Acid; Sulfuric Acid; Hydrobromic Acid; Hydroiodic Acid. Strong bases are Sodium hydroxide, potassium hydroxife, Calcium hydroxide, Barium hydroxide and Strontium hydroxide

1. KOH (aq) + HNO₃(aq) à KNO₃(aq) + HOH(l)

2. CuSO₄ (aq) + Na₂CO₃ (aq) à CuCO₃ (s) + Na₂SO₄ (aq)

3. NaOH (aq) + NH₄NO₃ (aq) à NaNO₃ (aq) + NH₃ (g) + HOH (l)

4. BaBr₂ (aq) + ZnSO₄ (aq) à BaSO₄ (s) + ZnBr₂ (aq)

5. Cr(OH)₂ (s) + HCl (aq) à