Starting with copper metal describe how a sample of crystals of copper (ii)chloride may be prepared in the lab
I'll give you a summary but you must put it together. I'll be glad to check your work.
Dissolve Cu metal in HNO3, decompose with heat (forming CuO) and react with HCl.
Dissolve copper metal
Hello,what is the correct answer
To prepare a sample of crystals of copper(II) chloride (CuCl2) in the lab, you can follow these steps:
1. Equipment and materials needed:
- Copper metal (Cu)
- Hydrochloric acid (HCl)
- Glass beaker
- Bunsen burner or hot plate
- Filter paper
- Funnel
- Glass stirring rod
- Distilled water
- Glass container for crystallization
- Safety goggles and lab coat
2. Safety precautions:
- Wear safety goggles and a lab coat to protect yourself from any splashes or spills.
- Handle hydrochloric acid with caution as it is corrosive. Avoid contact with skin or eyes.
3. Procedure:
- Start by measuring out a specific mass of copper metal. You can use a balance to weigh the desired amount accurately.
- Once you have the appropriate mass of copper metal, place it into the glass beaker.
- Add an excess of hydrochloric acid to the beaker containing the copper metal. The acid will react with the copper to produce copper(II) chloride according to the following equation:
Cu(s) + 2 HCl(aq) → CuCl2(aq) + H2(g)
- Gently stir the mixture using a glass stirring rod to ensure better mixing and contact between the copper and hydrochloric acid. The reaction will produce a blue-green solution of copper(II) chloride.
- If the reaction does not appear to be proceeding, you can warm the mixture gently using a Bunsen burner or a hot plate. This will help accelerate the reaction.
- Continue heating and stirring the mixture until all the copper metal dissolves completely in the hydrochloric acid. This process may take some time.
- Once all the copper metal has dissolved, remove the beaker from the heat source and allow it to cool down to room temperature.
- Prepare a crystalization setup by folding a filter paper into a funnel shape and placing it in a glass container.
- Carefully pour the blue-green copper chloride solution into the filter paper and allow it to sit undisturbed for several hours or overnight.
- As the solution cools, crystals of copper(II) chloride will start forming on the filter paper. This process is called crystallization.
- Once a sufficient number of crystals have formed, carefully remove them from the filter paper and transfer them to another container for further drying or storage.
- If necessary, rinse the crystals with a small amount of distilled water to remove any impurities. Then, allow the crystals to air dry completely.
By following these steps, you should be able to prepare a sample of crystals of copper(II) chloride in the lab.