Silver Chloride Precipitation

AgNO₃ + NaCl → AgCl↓ + NaNO₃

Visão geral

Silver nitrate reacts with sodium chloride to form a white curdy precipitate of silver chloride. AgCl has a very low Ksp of 1.8 × 10⁻¹⁰, making it essentially insoluble. The precipitate turns purple in light due to photodecomposition of AgCl to silver metal and chlorine. This is the basis of the chloride ion test.

Participantes

Papel	Substância	Coeficiente	Estado
Reagente	Silver Nitrate AgNO₃	1	(aq)
Reagente	Sodium Chloride NaCl	1	(aq)
Produto	Silver Chloride AgCl	1	(s)
Produto	Sodium Nitrate NaNO₃	1	(aq)

Exemplo do cotidiano

The silver chloride test for chloride ions in water is one of the first qualitative analysis tests taught in chemistry courses.

Importância industrial

A precipitação de AgCl é utilizada em testes de qualidade da água, fotografia (histórica) e na preparação de elétrodos de cloreto de prata para eletroquímica.

Propriedades

Tipo: Precipitation
Reversível: Não
Energia: Exotérmico
ΔH: -65,5 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 Silver Chloride Precipitation?

The balanced equation is: AgNO₃ + NaCl → AgCl↓ + NaNO₃.

What type of reaction is Silver Chloride Precipitation?

Silver Chloride Precipitation is a precipitation reaction.

Is Silver Chloride Precipitation exothermic or endothermic?

Silver Chloride Precipitation is exothermic (releases energy). The enthalpy change (ΔH) is -65.5 kJ/mol.