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The question says: A student plans a method to prepare pure crystals of copper sulfate the students method is:
1. Add one spatula of calcium carbonate to dilute the hydrochloric acid in a beaker.
2. When the fizzing stops, heat the solution with a Bunsen burner until all the liquid is gone.
The method contains several errors and does not produce copper sulfate crystals.
Explain the improvements the student should make to the method so that pure crystals of copper sulfate are produced.
1. Add one spatula of calcium carbonate to dilute the hydrochloric acid in a beaker.
2. When the fizzing stops, heat the solution with a Bunsen burner until all the liquid is gone.
The method contains several errors and does not produce copper sulfate crystals.
Explain the improvements the student should make to the method so that pure crystals of copper sulfate are produced.
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#2
The student should let the solution cool down slowly after heating for crystals to be seperated.
The student should use copper (II) hydroxide and sulfuric acid.
The student should use copper (II) hydroxide and sulfuric acid.
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#3
(Original post by ardz)
The question says: A student plans a method to prepare pure crystals of copper sulfate the students method is:
1. Add one spatula of calcium carbonate to dilute the hydrochloric acid in a beaker.
2. When the fizzing stops, heat the solution with a Bunsen burner until all the liquid is gone.
The method contains several errors and does not produce copper sulfate crystals.
Explain the improvements the student should make to the method so that pure crystals of copper sulfate are produced.
The question says: A student plans a method to prepare pure crystals of copper sulfate the students method is:
1. Add one spatula of calcium carbonate to dilute the hydrochloric acid in a beaker.
2. When the fizzing stops, heat the solution with a Bunsen burner until all the liquid is gone.
The method contains several errors and does not produce copper sulfate crystals.
Explain the improvements the student should make to the method so that pure crystals of copper sulfate are produced.
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#4
(Original post by ardz)
The question says: A student plans a method to prepare pure crystals of copper sulfate the students method is:
1. Add one spatula of calcium carbonate to dilute the hydrochloric acid in a beaker.
2. When the fizzing stops, heat the solution with a Bunsen burner until all the liquid is gone.
The method contains several errors and does not produce copper sulfate crystals.
Explain the improvements the student should make to the method so that pure crystals of copper sulfate are produced.
The question says: A student plans a method to prepare pure crystals of copper sulfate the students method is:
1. Add one spatula of calcium carbonate to dilute the hydrochloric acid in a beaker.
2. When the fizzing stops, heat the solution with a Bunsen burner until all the liquid is gone.
The method contains several errors and does not produce copper sulfate crystals.
Explain the improvements the student should make to the method so that pure crystals of copper sulfate are produced.
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#6
So would you pour copper oxide into the sulphuric acid (in the flask) and leave it in a warm water bath. Then stir, filter it afterwards?
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#7
(Original post by sleezyshrimp)
So would you pour copper oxide into the sulphuric acid (in the flask) and leave it in a warm water bath. Then stir, filter it afterwards?
So would you pour copper oxide into the sulphuric acid (in the flask) and leave it in a warm water bath. Then stir, filter it afterwards?
You need to evaporate off the water from the filtrate.
If you need dry crystals, you will need to put them in a warm oven.
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#8
(Original post by sleezyshrimp)
So would you pour copper oxide into the sulphuric acid (in the flask) and leave it in a warm water bath. Then stir, filter it afterwards?
So would you pour copper oxide into the sulphuric acid (in the flask) and leave it in a warm water bath. Then stir, filter it afterwards?
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#9
(Original post by mgi)
Copper oxide first, then add the sulphuric acid. Stir. Leave it for 10 mins. then filter it!
Copper oxide first, then add the sulphuric acid. Stir. Leave it for 10 mins. then filter it!
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#10
(Original post by Pigster)
It doesn't matter which you add to which.
It doesn't matter which you add to which.
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#11
(Original post by mgi)
no. its just a preference.
no. its just a preference.
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#12
(Original post by Pigster)
My preference is to start with the acid and add the solid. If it all reacts, add some more, etc. until some solid remains. That way, I don't have to be bothered to do the calculation or get out a balance to ensure the base is in excess.
My preference is to start with the acid and add the solid. If it all reacts, add some more, etc. until some solid remains. That way, I don't have to be bothered to do the calculation or get out a balance to ensure the base is in excess.
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