Yes, it is
Yes, cupric sulfate is soluble in water, with a solubility of about 31.6 g/100 mL at 20°C.
Cupric sulfate and chloride are blue; also cupric carbonate is blue but not soluble in water.
Anhydrous cupric sulfate would form hydrated copper(II) sulfate when water is added to it. This process is exothermic and the anhydrous crystals would dissolve as the water molecules bond with the copper sulfate molecules to form a hydrated crystal structure.
The empirical formula for cupric sulfate pentahydrate is CuSO4·5H2O. It consists of one copper (Cu) atom, one sulfur (S) atom, four oxygen (O) atoms, and five water (H2O) molecules.
Blue is the solution's color When blue CuSO4.5H2O (copper(II) sulfate pentahydrate) is dissolved, the solution turns blue. When white CuSO4 (anhydrous copper(II) sulfate) is dissolved, the solution turns also blue.
Most people think that Cupric sulfate or Copper(II) sulfate, is blue in colour. But actually it is not. Blue colour in Copper(II) sulfate is due to the presence of Water molecules in it. This form is called Copper(II) sulfate Pentahydrate[CuSO4.5H2O], which most people see. If it does not have any water molecules in it, the thing is in pure state and is White in colour. This form is Anhydrous Copper(II) sulfate[CuSO4]. This form is rarely seen, because it can absorb water itself from the nature and become blue in colour. So from this we know that very pure Copper(II) sulfate is not blue, But its Pentahydrate form is blue.
In water
CuSO4 + H20
The most common form is the pentahydrate.
Yes, aluminum sulfate is soluble in water.
Yes, calcium sulfate is sparingly soluble in water.
Yes, silver sulfate is slightly soluble in water.