Describe how the following reagents can be used to prepare copper (||) hydroxide :solid copper (||) sulphate ,solid sodium hydroxide and water
Make aqueous solution of CuSO4 and NaOH, mix the two solutions, filter the precipitate of Cu(OH)2 solid that forms and dry the Cu(OH)2. If you wish to recover the Na2SO4 that can be done by evaporating the water in the filtrate to dryness and collecting the solid Na2SO4 that is left behind.
CuSO4(aq) + 2NaOH(aq) ==> Cu(OH)2(s) + Na2SO4(aq)
To prepare copper (II) hydroxide (Cu(OH)2) using solid copper (II) sulfate (CuSO4), solid sodium hydroxide (NaOH), and water, follow these steps:
Step 1: Measure the quantities
Measure appropriate quantities of solid copper (II) sulfate (CuSO4), solid sodium hydroxide (NaOH), and water. The exact quantities will depend on the desired amount of copper (II) hydroxide you want to prepare.
Step 2: Combining copper (II) sulfate and water
Add the solid copper (II) sulfate (CuSO4) to a container, such as a beaker. Then, slowly add a sufficient amount of water to the container while stirring. Continue stirring until the copper (II) sulfate is completely dissolved in the water. This reaction will form a blue solution of copper (II) sulfate.
Step 3: Addition of sodium hydroxide
Once the copper (II) sulfate is fully dissolved, add solid sodium hydroxide (NaOH) to the beaker containing the copper (II) sulfate solution. Stir the mixture thoroughly to ensure proper mixing. Sodium hydroxide is a strong base and will react with copper (II) sulfate to form copper (II) hydroxide.
The balanced chemical equation for this reaction is:
CuSO4 + 2NaOH -> Cu(OH)2 + Na2SO4
Step 4: Precipitation of copper (II) hydroxide
As the sodium hydroxide reacts with copper (II) sulfate, a precipitate of copper (II) hydroxide will form. The copper (II) hydroxide will appear as a light green solid suspended in the solution.
Step 5: Filtration
To separate the copper (II) hydroxide from the solution, perform filtration. Set up a funnel with filter paper and pour the mixture into the funnel. The filter paper will trap the solid copper (II) hydroxide while allowing the liquid (sodium sulfate solution) to pass through as the filtrate.
Step 6: Washing and drying
After filtration, wash the collected copper (II) hydroxide with distilled water to remove any impurities. Then, carefully transfer the washed solid to a glass dish or watch glass for drying. Allow the copper (II) hydroxide to dry completely in a well-ventilated area or an oven set at a low temperature.
Now, you have successfully prepared copper (II) hydroxide using solid copper (II) sulfate, solid sodium hydroxide, and water. Remember to handle these chemicals with care and follow appropriate safety precautions.
To prepare copper (II) hydroxide using solid copper (II) sulfate, solid sodium hydroxide, and water, you would need to follow the steps below:
Step 1: Set up the reaction
First, you need to mix the solid copper (II) sulfate and solid sodium hydroxide together in a beaker. The balanced chemical equation for this reaction is:
CuSO4 + 2NaOH → Cu(OH)2 + Na2SO4
Step 2: Dissolve the reagents
Next, add a measured amount of water to the mixture in the beaker. The water helps to dissolve the reagents and promote the chemical reaction. Stir the mixture gently to ensure thorough mixing.
Step 3: Observe the formation of a precipitate
As the reaction proceeds, you will observe the formation of a solid precipitate, which is copper (II) hydroxide. The color of the precipitate will be light blue.
Step 4: Separate the precipitate
Once the reaction is complete, you need to separate the solid copper (II) hydroxide from the liquid. This can be done by using filtration or decantation. Filtration involves pouring the mixture through a filter paper and collecting the solid precipitate. Decantation involves carefully pouring off the liquid while leaving the solid behind.
Step 5: Wash and dry the product
To remove any impurities and excess reagents, the collected copper (II) hydroxide should be washed with water. This can be done by dissolving the precipitate in water and then filtering it again. Afterward, the solid can be dried by allowing it to air dry or by using gentle heat.
By following these steps, you can prepare copper (II) hydroxide using solid copper (II) sulfate, solid sodium hydroxide, and water.