Because of the loss of the water of hydration.
Hydrated copper sulphate (CuSO4.5H2O) is BLUE Anhydrous copper sulphate (CuSO4) is white at any temperature.
Blue vitriol (copper(II) sulfate pentahydrate) changes to white anhydrous copper(II) sulfate upon heating due to loss of water molecules. When heated, the blue vitriol dehydrates and loses its water molecules, resulting in a change in color from blue to white.
Light blue. A light blue Azure Blue.
Heating Copper Sulfate gently drives off the water of crystallization leaving an amorphous white powder. This is purely a physical reaction. Heating this powder strongly will cause a chemical reaction liberating sulfur dioxide and oxygen, leaving black copper(II)oxide: 2CuSO4 >2CuO + 2SO2 + O2
The color of paint after heating copper sulfate will change from blue to white as the heat drives off the water molecules in the compound.
Heating a crystal of blue copper sulfate typically results in the release of water vapor, leaving behind white anhydrous copper sulfate powder. The black powder formed may be due to decomposition of the copper sulfate or impurities in the crystal. Sulfur may not be directly produced from heating copper sulfate.
Sky blue or powder blue.
Yes, usually powder blue. In rare occasions they are white.
Royal blue & white
The official colors of the Pittsburgh Pirates are black, gold and white.
Agapanthus colour is normally genetically determined, as such a white flower cannot turn blue. This does happen with flowers such as Hydrangea, where a blue or white flower can be turned pink - this is a result of the pH or acidity level of the soil
Hydrated copper sulphate (CuSO4.5H2O) is BLUE Anhydrous copper sulphate (CuSO4) is white at any temperature.
Try some regular blue rit dye and mix it with a little powder-white rit dye, but remember to put in less powder-white than blue or it won't come out right. -Ryan
They are a "powder blue" color mainly, and have a yellow dorsal with white on the top. They are commonly reffered to as Powder Blue Tangs. they have white anal fins, a black face, and a white jaw. They have bodys about a 1/3-1/2, the length of the fish, tall. They can get rather large. Ive seen some exceeding one foot in length.
The woman that wears the white stuff, and the hat with a blue W on it.
Blue vitriol (copper(II) sulfate pentahydrate) changes to white anhydrous copper(II) sulfate upon heating due to loss of water molecules. When heated, the blue vitriol dehydrates and loses its water molecules, resulting in a change in color from blue to white.
Light blue. A light blue Azure Blue.