TURTLE ROCK SCIENTIFIC / SCIENCE SOURCE / SCIENCE PHOTO LIBRARY TURTLE ROCK SCIENTIFIC / SCIENCE SOURCE / SCIENCE PHOTO LIBRARY
Ammonia reacts with copper sulfate. When copper(II) sulfate (CuSO4) is dissolved in water, it forms a blue aquo complex (hexaaquacopper(II), (Cu(H2O)6)2+, left beaker). When ammonia (NH4OH) is added to the solution (centre beaker), at first pale blue copper hydroxide (Cu(OH)2) is formed. It then dissolves in excess ammonia to form a deep blue solution of tetraaminediaquacopper(II) complex ((Cu(NH3)4(H2O)2)2+, right beaker). Here 0.05M copper sulfate and 2M ammonia solutions were used.
Model release not required. Property release not required.