Silver Chloride Precipitation

AgNO₃ + NaCl → AgCl↓ + NaNO₃

Tổng quan

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.

Người tham gia

Vai trò	Chất	Hệ số	Trạng thái
Chất phản ứng	Silver Nitrate AgNO₃	1	(aq)
Chất phản ứng	Sodium Chloride NaCl	1	(aq)
Sản phẩm	Silver Chloride AgCl	1	(s)
Sản phẩm	Sodium Nitrate NaNO₃	1	(aq)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

AgCl precipitation is used in water quality testing, photography (historical), and in the preparation of silver chloride electrodes for electrochemistry.

Tính chất

Loại: Precipitation
Thuận nghịch: Không
Năng lượng: Tỏa nhiệt
ΔH: -65,5 kJ/mol

Phản ứng liên quan

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.