Lead Chloride Precipitation

Pb(NO3)2 + 2NaCl → PbCl2↓ + 2NaNO3

개요

Lead nitrate reacts with sodium chloride to form a white precipitate of lead chloride (Ksp = 1.7 × 10⁻⁵). PbCl₂ is moderately insoluble at room temperature but becomes quite soluble in hot water, distinguishing it from AgCl. The precipitate consists of fine needle-like crystals.

참여 물질

역할 물질 계수 상태
반응물 Sodium Chloride NaCl 2 (aq)
생성물 Sodium Nitrate NaNO₃ 2 (aq)

일상 속 예시

In qualitative analysis, PbCl₂ is separated from AgCl and Hg₂Cl₂ by dissolving it in hot water, a key step in Group I cation analysis.

산업적 중요성

분석 화학에서 납 이온의 정성 분석 및 음이온 침전 반응 연구에 사용됩니다. 납 화합물 합성 및 페로브스카이트 태양전지 연구의 전구체로 활용됩니다.

성질

유형
Precipitation
가역 반응
아니오
에너지
발열
ΔH
-14.0 kJ/mol

관련 반응

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 Calcium Carbonate Precipitation Iron(III) Hydroxide Precipitation

Frequently Asked Questions

What is the equation for Lead Chloride Precipitation?
The balanced equation is: Pb(NO₃)₂ + 2NaCl → PbCl₂↓ + 2NaNO₃.
What type of reaction is Lead Chloride Precipitation?
Lead Chloride Precipitation is a precipitation reaction.
Is Lead Chloride Precipitation exothermic or endothermic?
Lead Chloride Precipitation is exothermic (releases energy). The enthalpy change (ΔH) is -14.0 kJ/mol.