Copper (II) hydroxide

 

Copper (II) hydroxide

Chemical formula	Cu(OH)2
OTP appearance	blue to blue-green solid
Molar Mass(g/mol)	97.56
Density(g/cc)	3.368
Melting Point(°C)	80-100 (decomp)
Solubility in water(g/L)	insoluble
Solubility in ethanol(g/L)	insoluble
NFPA 704	0 2 0

Uses

Justification Questioned

Other

• Precursor for important copper compounds such as copper (II) chloride

Natural occurrence

• rarely occurring mineral spertiniite

Character

Soluble in ammonium hydroxide

Production

Synthesis

Combine a soluble copper (II) salt (like copper (II) chloride or copper (II) acetate) with sodium hydroxide or potassium hydroxide

Example

1. Dissolve 72g copper (II) acetate monohydrate (0.36M) in 1L of water
2. Dissolve 42g of sodium hydroxide monohydrate (0.72M) in 50ml of water
3. Combine solutions producing copper hydroxide and sodium acetate

   Cu(CH₃COO)₂(aq) + 2 NaOH(aq) → Cu(OH)₂(s) + NaCH₃COO(aq)