Nickel Hydroxide Precipitation

NiCl₂ + 2NaOH → Ni(OH)₂↓ + 2NaCl

Descripción general

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

Rol	Sustancia	Coeficiente	Estado
Reactivo	Sodium Hydroxide NaOH	2	(aq)
Producto	Sodium Chloride NaCl	2	(aq)

Ejemplo cotidiano

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

Importancia industrial

El hidróxido de níquel es un material crítico para baterías de NiCd y NiMH, y también se usa en niquelado electrolítico y como catalizador en diversas reacciones de síntesis.

Propiedades

Tipo: Precipitation
Reversible: No
Energía: Exotérmico
ΔH: -55,0 kJ/mol

Reacciones 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.