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How does adding anhydrous sodium sulfate to the dichloromethane solution remove water?
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How do you get copper from copper sulfate solution?
Copper can be obtained from copper sulfate solution by electroplating it onto an electrode or by adding a metal higher in the electromotive series than copper, such as iron, to the solution. The more active metal will dissolve by displacing copper in metallic form from the copper sulfate.
How can sodium sulphate be made?
The easiest way of making sodium sulfate solution is by adding sulfuric acid to sodium hydroxide. If the pure material is required, then evaporate the water off.
Is adding water to heated copper sulfate crystals chemical or physical?
chemical
How could you make concentrated solution weaker?
A concentrated solution can be weakened by adding more of the solution material (usually water) to dilute it.
Why would adding an acid or base lower the pH in a solution?
Adding an acid to a solution will lower it's Ph, but adding a base will raise it's Ph.
Where is the excess copper from after adding zinc to copper sulfate?
The "excess" metallic copper produced by adding zinc metal to a copper sulfate solution comes from exchanging zinc atoms from the metal for copper atoms from the copper sulfate solution. During the reaction, the zinc atoms are ionized to cations and the copper cations from the solution are reduced to neutral atoms.
What do you add to an acid to make it show that it contained sulfate ions?
Sulfate ions in a solution are verified by adding BaCl2. If an acid was not added, it might be confused with BaCO3, if the solution has carbonate ions.
Why is it necessary to remove water by adding anhydrous sodium sulfate (step 4)?
Because many chemical procedures need dried reagents
How do you get copper from copper sulfate solution?
Copper can be obtained from copper sulfate solution by electroplating it onto an electrode or by adding a metal higher in the electromotive series than copper, such as iron, to the solution. The more active metal will dissolve by displacing copper in metallic form from the copper sulfate.
What is meant by the word anhydrous when applied to a chemical?
Anhydrous simply means 'without water'. The opposite is a hydrated substance, in which salt crystals contain water as an integral part of the crystal. For example, anhydrous cobalt(II) chloride, CoCl2, is a blue powder. Add water and you form cobalt(II) chloride hexahydrate, CoCl2.6H2O, which is a pink colour. Anhydrous cobalt chloride can be used to test for the presence of water because of this dramatic colour change. In addition, hydrated copper(II) sulfate, CuSO4.5H2O, forms bright blue crystals. Heating them drives off the water of crystallisation and anhydrous CuSO4, a grey/white powder, is formed. Adding water will reform a blue solution of the hydrated salt.
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.
How do you increase a solubility of Sodium Sulfate?
Sodium sulfate is highly soluble in water, but insoluble in most organic solvents. If you want to increase its solubility in water (as for any salt), you can heat the solution or remove one of the products (sodium ions or sulfate ions) from solution. I can't think of any insoluble sodium salts, but barium sulfate (BaSO4) is insoluble in water. Thus, adding barium chloride (or some other soluble barium salt) will remove sulfate from the equilibrium (due to BaSO4 precipitation) and increase the solubility of sodium sulfate.
How can sodium sulphate be made?
The easiest way of making sodium sulfate solution is by adding sulfuric acid to sodium hydroxide. If the pure material is required, then evaporate the water off.
Which causes the pH of a solution of a solution to increase?
Adding a base
Is adding water to heated copper sulfate crystals chemical or physical?
chemical
How could you make concentrated solution weaker?
A concentrated solution can be weakened by adding more of the solution material (usually water) to dilute it.
Why would adding an acid or base lower the pH in a solution?
Adding an acid to a solution will lower it's Ph, but adding a base will raise it's Ph.
