Reactants Observation(s) Type of Reaction Balanced Molecular Equation aqueous barium chloride + aqueous sodium sulfate A white solid forms after the solutions are mixed together. Precipitation Reaction BaCl(aq) + Na SO.(aq) – BaSO (s) + 2 NaCl(aq) zinc metal + hydrochloric acid Bubbles are observed after the solutions are mixed together. The zinc appears to be smaller in size. aqueous sodium phosphate + aqueous copper(II) sulfate A solid forms after the solutions are mixed together. copper metal + aqueous silver nitrate After the solution is added to the copper, the copper turns black and pieces of it are following off.

Solid sodium bicarbonate + aqueous acetic acid When acetic acid is poured on the solid, bubbles are formed, and the solution looks frothy. aqueous nickel(II) nitrate + aqueous sodium hydroxide A solid forms after the solutions are mixed together. aqueous potassium chloride + aqueous silver nitrate A solid forms after the solutions are mixed together. aqueous hydrochloric acid + aqueous sodium hydroxide A clear solution is observed after the solutions are mixed together.

aqueous sodium carbonate + aqueous cobalt(II) nitrate A solid forms after the solutions are mixed together zinc metal + aqueous lead(II) nitrate The zinc metal looks as if it is corroding when the solution is added. magnesium metal + aqueous acetic acid When the solution is added, bubbles form around/on the metal. aqueous iron(III) chloride + aqueous ammonium hydroxide A yellow solid forms after the solutions are mixed together.