GeneralCLASS 8CBSE
answered 1 Apr 2026What is the colour of CuSO4 solution?
A.VERIFIED ANSWERfact-checked by tutors
Copper sulfate solution displays a distinctive bright blue or blue-green color.
When CuSO4 dissolves in water, it creates an intensely colored blue solution due to the presence of hydrated copper ions [Cu(H2O)6]²⁺. The color intensity varies with concentration—dilute solutions appear light blue, while concentrated solutions show deep, vibrant blue. This characteristic color makes copper sulfate easily identifiable and useful as a visual indicator in chemical reactions.
Important Notes:
- Aqueous CuSO4 solution is bright blue
- Color comes from copper ions surrounded by water molecules
- Concentration affects color intensity
- Anhydrous (dry) CuSO4 appears white or grayish, turning blue when water is added