Copper(II) sulfate
Q. What happens when copper 2 sulfate and sodium hydroxide mix?
The reaction between copper(Il) sulphate and sodium hydroxide solutions is a good place to start. If you slowly add one to the other while stirring, you will get a precipitate of copper(II) hydroxide, Cu(OH)2.
Table of Contents
- Q. What happens when copper 2 sulfate and sodium hydroxide mix?
- Q. What do you observe when sodium hydroxide is added to copper sulphate solution?
- Q. Is sodium hydroxide and copper sulfate a chemical change?
- Q. What is the chemical equation of CuSO4?
- Q. What is the Colour of feso4 solution?
- Q. What is the Colour of FeSO4 4.7 h2o?
- Q. Which impart green Colour to FeSO4 7H2O?
- Q. What happens when FeSO4 4.7 h2o heated?
- Q. When crystals of ferrous sulphate are heated in a test tube Colour change would you observe give chemical reaction also?
- Q. When copper sulphate crystals are heated a white powder is formed explain giving chemical equation?
- Q. When Green Colour ferrous sulphate crystals are heated the Colour of the crystal changes because?
- Q. When crystals of FeSO4 are strongly heated the residue obtained is?
- Q. Why crystals of copper sulphate become white when they are heated?
- Q. What happens when crystals of feso4 are heated the residue obtained is?
- Q. What will happen when copper sulphate crystals are heated strongly?
- Q. What happens if copper sulphate crystals taken into dry test tube are heated?
- Q. What happened if you put copper sulphate crystals in water?
- Q. When water is added to anhydrous white copper sulphate The color will change to?
- Q. Why does white copper sulphate turn blue on adding few drops of water?
- Q. What would you observe when a drop of water falls on white anhydrous copper sulphate?
- Q. What happens when water is added to white copper sulphate?
- Q. What do you observe is the blue Colour of copper sulphate restored?
- Q. What happens to anhydrous salt when water is added?
Q. What do you observe when sodium hydroxide is added to copper sulphate solution?
Answer. Answer: When sodium hydroxide, a strong base, reacts with copper sulfate, an acidic salt, a blue precipitate of copper hydroxide is produced with the ions of sodium sulfate in solution.
Q. Is sodium hydroxide and copper sulfate a chemical change?
The reaction between sodium hydroxide and copper sulphate is a chemical change because new products are formed after the reaction.
Q. What is the chemical equation of CuSO4?
CuSO4
| Names | |
|---|---|
| Appearance | gray-white (anhydrous) blue (pentahydrate) |
| Density | 3.60 g/cm3 (anhydrous) 2.286 g/cm3 (pentahydrate) |
| Melting point | 110 °C (230 °F; 383 K) decomposes (·5H2O) if pentahydrate <560 °C decomposes if anhydrous Fully decomposes at 590 °C |
| Boiling point | decomposes to cupric oxide at 650 °C |
Q. What is the Colour of feso4 solution?
green
Q. What is the Colour of FeSO4 4.7 h2o?
1 Answer. FeSO4. 7H2O is green in colour and loses water of crystallisation when it is heated.
Q. Which impart green Colour to FeSO4 7H2O?
7H2O is blue green color. the anhydrous form of FeSO4 is colorless which mean it has no water in the crystal. The green color of the aqueous solution of FeSo4 is because of the water molecules present in solution.
Q. What happens when FeSO4 4.7 h2o heated?
when we heat it . its crystals lose water and anhydrous ferrous sulphate (FeSO4) is formed. So their color changes from light green to white.
Q. When crystals of ferrous sulphate are heated in a test tube Colour change would you observe give chemical reaction also?
When ferrous sulphate is heated in a boiling tube, the ferrous sulphate crystals contain water molecules (FeSO4. 7H2O). On heating, these ferrous sulphate crystals lose water and anhydrous ferrous sulphate (FeSO4) is formed. So you can observe that their colour changes from light green to white.
Q. When copper sulphate crystals are heated a white powder is formed explain giving chemical equation?
The blue coloured copper sulphate crystals turns white due to the loss of water molecules. The formula of copper sulphate is CuSO4. 5H2O. When copper sulphate is heated, it looses water molecules and hence it looses blue colour.
Q. When Green Colour ferrous sulphate crystals are heated the Colour of the crystal changes because?
On heating, ferrous sulphate crystals lose water. So their colour changes from light green to white due to the formation of anhydrous ferrous sulphate (FeSO4). When ferrous sulphate is heated, it gives ferric oxide, sulphur dioxide and sulphur trioxide.
Q. When crystals of FeSO4 are strongly heated the residue obtained is?
On heating, the green crystals are converted into a dirty-yellow anhydrous solid as it loses water of crystallization. When further heated, the anhydrous material releases sulphur dioxide and sulphur trioxide leaving a reddish-brown iron oxide.
Q. Why crystals of copper sulphate become white when they are heated?
When hydrated salt of copper sulphate is heated strongly, blue copper sulphate crystals turn white (due to the loss of water of crystallization). When anhydrous copper sulphate reacts again with water it will form Hydrated copper sulphate.
Q. What happens when crystals of feso4 are heated the residue obtained is?
Answer. On heating ferrous sulphate it decomposes into ferric oxide Fe2O3 (residue) which is red in colour. When ferrous sulphate crystals are heated, the residue obtained in test tube is red colour.
Q. What will happen when copper sulphate crystals are heated strongly?
When copper sulphate (CuSO4. 5H2O) crystals are heated strongly, they lose all the water of crystallisation and form anhydrous copper sulphate, which is white.
Q. What happens if copper sulphate crystals taken into dry test tube are heated?
If we heat the copper sulfate crystals then the water of crystallization will evaporate and the blue color of the crystals changes into white precipitate.
Q. What happened if you put copper sulphate crystals in water?
If copper sulphate crystals are added to water then, the particles of copper sulphate crystals loses attraction between them and starts moving continuously and gets mixed up with water.
Q. When water is added to anhydrous white copper sulphate The color will change to?
When Copper sulfate is heated strongly, it changes into white colored anhydrous copper sulphate and when water is added again to it then it is again changed to blue color copper sulphate.
Q. Why does white copper sulphate turn blue on adding few drops of water?
when you heat it, the water of crystallization i.e, 5h20 gets vapourized. so cuso4 only is present now which is white in colour. when few drops of water is sprinked the cuso4 regains its water of crystallization and forms cuso4. 5h20 and becomes blue colour.
Q. What would you observe when a drop of water falls on white anhydrous copper sulphate?
The anhydrous copper sulphate without any moist or water molecules in it – is a light greenish white powder. When a water drop falls on the anhydrous powder, water molecules are absorbed by the sulphate. The pentahydrate form CuSO₄ . 5 H₂O of copper sulphate is a beautiful bright shining blue crystalline solid.
Q. What happens when water is added to white copper sulphate?
Pure copper(II) sulfate is white. When water is present in a sample of copper(II) sulfate it turns blue. It is still a dry solid, because the individual water molecules are trapped within the ionic lattice surrounding the copper(II) ions.
Q. What do you observe is the blue Colour of copper sulphate restored?
The blue colour of copper sulphate is restored.In the above activity copper sulphate crystals which seem to be dry contain the water of crystallization and when these crystals are heated the water present in crystals is evaporated and the salt turns white.
Q. What happens to anhydrous salt when water is added?
By adding water to the anhydrous salt, the hydrate will reform. Some anhydrous salts can absorb moisture from the air to become hydrated. These salts are as said to be hygroscopic. Some hygroscopic salts are useful as drying agents.
