Determination of a Chemical Formula

A detailed Summary of Determination of a Chemical Formula

Purpose: To determine the chemical formula of the unknown hydrated copper chloride.

Procedure: 1) Weigh a dry crucible onto the analytical balance and record data.

2) Place about 1 gram of hydrated copper chloride into the crucible.

3) Place the crucible w/ hydrated copper chloride onto the hot plate.

4) Gently stir all of the green crystals until the hydrated crystals turn

5) Once the crystals are all brown, remove the crucible from the hot plate and cover it to minimize rehydration. Let it cool for about 15 minutes.

6) Remove the cover and weigh the uncovered crucible and its contents on

7) Transfer the brown contents into an empty 100-ml beaker. Then rinse the crucible with 5 to 7 ml of distilled water, and add the rinsings to the

beaker. Fill the beaker with water to about 15 ml.

8) Swirl the beaker gently to dissolve the brown solid. The color wi

Mass of Watch glass/ w filter paper and copper = 50.8594 g

Mass of Water: 47.2261g - 46.2983g = .9278 g Hydrated Copper Chloride

9) Measure out about 12 cm of aluminum wire and form the wire into a

Approximate Word count = 787
Approximate Pages = 3 (250 words per page double spaced)

Category: Science

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