Silver Iodide Precipitation

AgNO₃ + KI → AgI↓ + KNO₃

Tổng quan

Silver nitrate reacts with potassium iodide to form a yellow precipitate of silver iodide (Ksp = 8.5 × 10⁻¹⁷). AgI is extremely insoluble and does not dissolve in ammonia, unlike AgCl and AgBr. Its crystal structure is similar to ice, making it an excellent cloud seeding agent.

Người tham gia

Vai trò	Chất	Hệ số	Trạng thái
Chất phản ứng	Silver Nitrate AgNO₃	1	(aq)
Sản phẩm	Potassium Nitrate KNO₃	1	(aq)

Ví dụ thực tế

Cloud seeding aircraft release silver iodide particles to induce rain, exploiting AgI's ice-like crystal structure that nucleates ice crystals.

Tầm quan trọng công nghiệp

Silver iodide is used in cloud seeding for weather modification, in photography, and as an antiseptic agent.

Tính chất

Loại: Precipitation
Thuận nghịch: Không
Năng lượng: Tỏa nhiệt
ΔH: -110,0 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 Iodide Precipitation?

The balanced equation is: AgNO₃ + KI → AgI↓ + KNO₃.

What type of reaction is Silver Iodide Precipitation?

Silver Iodide Precipitation is a precipitation reaction.

Is Silver Iodide Precipitation exothermic or endothermic?

Silver Iodide Precipitation is exothermic (releases energy). The enthalpy change (ΔH) is -110.0 kJ/mol.