Until someone comes along who know about copper sulfate specifically, I can say that most soluble crystalline compounds dissolve more readily in hot water and the water (at least will still hot) will hold more of the compound. But, as it cools is can become supersaturated and some of the compound may precipitate out.
Copper sulfate is not black. Combined with water, as hydrated copper sulfate, it is blue. Without water, as anhydrous copper sulfate, it is white.
When copper sulfate is heated, it undergoes thermal decomposition, turning into copper oxide, sulfur dioxide gas, and oxygen gas. The color of the compound changes from blue to black as the heating process progresses.
Yes, copper sulfate is an electrolyte. When dissolved in water, copper sulfate dissociates into copper ions and sulfate ions, which are capable of carrying an electric current.
To change blue copper sulfate to white copper sulfate, you can heat the blue copper sulfate to drive off the water molecules and get anhydrous white copper sulfate. This process is known as dehydration. Be cautious when heating copper sulfate as it can release toxic fumes.
Copper sulfate would crystalize as blue crystals, water would evaporate. To get the copper sulfate itself to evaporate you would need to heat it, melting the dry crystals then vaporizing them.
Adding water to heated copper sulfate crystals is a chemical change. When water is added to heated copper sulfate crystals, the copper sulfate undergoes a chemical reaction where it dissolves in the water to form a solution. This is a chemical change because the chemical composition of the copper sulfate is altered during the process.
The blue copper (2) sulfate is undergoing a reversible reaction. When heated, it forms a white solid (copper (2) oxide) and water. When water is added to the white solid, it forms the original blue copper (2) sulfate, releasing heat, indicating an exothermic reaction.
When copper sulfate is heated the observation is that it turns white as the water which is driven off by the heat. It is also stated that the white solid will remain and if water is added to the anhydrous copper sulfate a reaction will occur.
Why does copper sulfate change its colour when water is added
When hydrated copper sulfate is heated, it loses its water molecules to form anhydrous copper sulfate. Since the molar ratio between the two forms is 1:1, if 6.4 moles of hydrated copper sulfate is heated, 6.4 moles of anhydrous copper sulfate will be produced.
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.
The solute is copper sulfate, as it is the substance being dissolved in water.
When copper sulfate pentahydrate is heated, it undergoes a dehydration reaction where the water molecules are released, leaving behind anhydrous copper sulfate. This process is reversible, and when anhydrous copper sulfate is exposed to moisture, it will reabsorb water and form copper sulfate pentahydrate again.
When blue copper sulphate is heated, it loses water molecules and converts to anhydrous copper sulfate, which is white in color. The blue color of copper sulfate is due to the presence of water molecules in its crystal structure.
Yes, copper sulfate crystals can dissolve in water. When added to water, the crystals break down into copper ions and sulfate ions, forming a solution of copper sulfate.
When copper sulfate crystals are heated, they lose their water of hydration and turn into anhydrous copper sulfate, which is a white powder. The color change from blue to white signifies the removal of water molecules.
When copper sulfate is added to water, it dissociates into copper ions and sulfate ions. The copper ions give the solution a blue color, while the sulfate ions do not impact the color. The solution becomes a blue color due to the presence of copper ions.