Answer:
Step-by-step explanation:
To produce a pure, dry sample of copper chloride from an acid and a metal oxide, you can follow these steps:
Materials needed:
Copper oxide (CuO)
Hydrochloric acid (HCl)
Distilled water
Filter paper
Evaporating dish
Bunsen burner
Heat-resistant mat
Glass stirring rod
Procedure:
Weigh out a known quantity of copper oxide (CuO), such as 5 grams, and place it in a clean, dry beaker.
Measure out the required amount of hydrochloric acid (HCl), typically a 1:1 molar ratio with the copper oxide, and slowly pour it over the copper oxide while stirring with a glass rod. The reaction should produce copper chloride (CuCl2) and water (H2O).
Continue to stir until all the copper oxide has reacted with the acid and dissolved. The solution will turn blue-green in color.
Filter the solution through filter paper into a clean, dry evaporating dish to remove any undissolved copper oxide and impurities.
Heat the evaporating dish with the solution over a Bunsen burner flame on a heat-resistant mat, while stirring constantly with a glass rod. Heat until the solution is completely evaporated and dry white crystals of copper chloride are left behind.
Allow the evaporating dish to cool down to room temperature.
Weigh the evaporating dish containing the dry copper chloride crystals to determine the yield of the reaction.
Store the pure copper chloride crystals in a clean, dry container with a tight-fitting lid until ready for use.
By following these steps, you should be able to produce a pure, dry sample of copper chloride from an acid and a metal oxide.