Chrome Electroplating

Cr³⁺ + 3e⁻ → Cr

Descripción general

Chromium plating deposits a thin layer of chromium from a chromic acid or trivalent chromium bath. Decorative chrome is only 0.25–0.5 μm thick over a nickel undercoat, while hard chrome (industrial) is 20–250 μm thick. Chrome provides exceptional hardness (68–72 HRC), corrosion resistance, and a mirror-like finish.

Participantes

Rol	Sustancia	Coeficiente	Estado
Producto	Chromium Cr	1	(s)

Ejemplo cotidiano

The shiny chrome trim on cars, bathroom fixtures, and kitchen appliances is applied by this electroplating process.

Importancia industrial

El cromado es esencial para molduras de automoción, cilindros hidráulicos, aros de pistón y rodillos industriales. Las regulaciones ambientales impulsan el cambio del cromo hexavalente al trivalente.

Propiedades

Tipo: Electrochemical
Reversible: Sí
Energía: Exotérmico
ΔH: -215,0 kJ/mol

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Frequently Asked Questions

What is the equation for Chrome Electroplating?

The balanced equation is: Cr³⁺ + 3e⁻ → Cr.

What type of reaction is Chrome Electroplating?

Chrome Electroplating is a electrochemical reaction. It is reversible under certain conditions.

Is Chrome Electroplating exothermic or endothermic?

Chrome Electroplating is exothermic (releases energy). The enthalpy change (ΔH) is -215.0 kJ/mol.