Nickel Hydroxide Precipitation

NiCl₂ + 2NaOH → Ni(OH)₂↓ + 2NaCl

Visão geral

Nickel chloride reacts with sodium hydroxide to form a green precipitate of nickel(II) hydroxide (Ksp = 5.5 × 10⁻¹⁶). The apple-green precipitate does not dissolve in excess NaOH (not amphoteric) but dissolves in ammonia to form the deep blue hexaammine nickel(II) complex.

Participantes

Papel	Substância	Coeficiente	Estado
Reagente	Sodium Hydroxide NaOH	2	(aq)
Produto	Sodium Chloride NaCl	2	(aq)

Exemplo do cotidiano

Nickel hydroxide is the active material in rechargeable nickel-metal hydride (NiMH) batteries used in hybrid cars and consumer electronics.

Importância industrial

O hidróxido de níquel é um material crítico para baterias NiCd e NiMH, e é também utilizado na galvanização de níquel e como precursor de catalisadores.

Propriedades

Tipo: Precipitation
Reversível: Não
Energia: Exotérmico
ΔH: -55,0 kJ/mol

Reações relacionadas

Aluminum Hydroxide Precipitation Barium Carbonate Precipitation Barium Sulfate Precipitation Cadmium Sulfide Precipitation (Yellow) Calcium Fluoride Precipitation (Fluorite) Calcium Phosphate Precipitation (Bone Mineral) Chromium(III) Hydroxide Precipitation Lead Carbonate Precipitation Lead Chloride Precipitation Iron(III) Hydroxide Precipitation

Frequently Asked Questions

What is the equation for Nickel Hydroxide Precipitation?

The balanced equation is: NiCl₂ + 2NaOH → Ni(OH)₂↓ + 2NaCl.

What type of reaction is Nickel Hydroxide Precipitation?

Nickel Hydroxide Precipitation is a precipitation reaction.

Is Nickel Hydroxide Precipitation exothermic or endothermic?

Nickel Hydroxide Precipitation is exothermic (releases energy). The enthalpy change (ΔH) is -55.0 kJ/mol.