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Mercuric sulfate is added to complex chloride (and other halogen) ions. These ions interfere in the COD digestion by complexing with the silver to reduce its catalytic effect and by reacting with the dichromate to form elemental halogens thus giving falsely high readings.
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Does the mass of water increase when you add copper sulfate?
The mass of water does not increase when copper sulfate is added to the water, unless the copper sulfate is hydrated. The mass of the mixture of water and copper sulfate, of course, does increase.
- What would happen to the anhydrous cupric sulfate if you added water to it?
If you were to add water to anhydrous cupric sulfate it would be pentahydrate a bright blue.
How do you Manufacture Silver Sulfate?
Add sulfuric acid to a solution of silver nitrate.
What do you get if you add sodium sulfate to barium chloride?
If both of the compounds named in the question are in solution in water, barium sulfate will precipitate. If both are solids when mixed, there will usually be no reaction.
What happens when you heat anhydrous copper sulphate?
Copper sulfate is normally found in the form of blue crystals, copper (II) sulfate pentahydrate. When you heat copper sulfate pentahydrate it turns white as the water which is driven off by the heat. The white solid remaining is anhydrous copper sulfate. If you add water to the anhydrous copper sulfate an exothermic reaction occurs, you can feel the test-tube getting hot, as the blue copper sulfate pentahydrate is re-formed.
How do you test for barium ions in a solution?
Add a sulfate solution: BaSO4 precipitates!
How can you test a solution for the presence of ba ions?
Add a sulfate solution: BaSO4 precipitates!
How is the Brown ring test performed?
In Chemistry the Brown Ring test is performed by add iron(II) sulfate with a solution of nitrate, then add sulphuric acid, a brown ring should form.
What is affect of formic acid dilute with water?
Chloride ion interfere in the chemical oxygen demand experiment a lot. So in the presence of HCl give a wrong COD value. To reduce the interference of chloride ion we add mercuric salt in the solution.
Is Na2SO4 soluble in water?
Yes, sodium sulfate is water soluble. Many sulfates are soluble in water. A notable exception is barium sulfate, whose insolubility forms the basis of a test for the presence of sulfate ions. Add barium chloride to a solution containing sulfate ions. The white barium sulfate precipitate is a positive test for sulfate ions.
What happens when you add morphine sulfate with zinc sulfate?
Nothing, they do not react
How to prepare of 0.1N mercuric chloride?
Take 5 gm of HgCL2 + Add 100 ml of Distilled Water
How would you test the presence of sulfate ions?
To identify the presence of sulfate ions in a solution, follow these steps: To acidify the sample, add a few drops of dilute hydrochloric acid (HCl) to the sample. Then, add a few drops of dilute barium chloride (BaCl2) solution to the sample. If sulfate ions are present in the solution, a white precipitate of barium sulfate (BaSO4) will form. The reaction is: Ba²⁺ (aq) + SO4²⁻ (aq) → BaSO4 (s) For example, if we have a solution of magnesium sulfate (MgSO4), the reaction would be: BaCl2 (aq) + MgSO4 (aq) → BaSO4 (s) + MgCl2 (aq) By observing the formation of the white precipitate, we can confirm the presence of sulfate ions in the sample.
Does the mass of water increase when you add copper sulfate?
The mass of water does not increase when copper sulfate is added to the water, unless the copper sulfate is hydrated. The mass of the mixture of water and copper sulfate, of course, does increase.
What is the gas formed when you add zinc to copper sulfate?
hydrogen gas
- What would happen to the anhydrous cupric sulfate if you added water to it?
If you were to add water to anhydrous cupric sulfate it would be pentahydrate a bright blue.
How do you Manufacture Silver Sulfate?
Add sulfuric acid to a solution of silver nitrate.
