탄산납 침전

Pb(NO3)2 + Na2CO3 → PbCO3↓ + 2NaNO3

개요

Lead nitrate reacts with sodium carbonate to form a white precipitate of lead carbonate (Ksp = 7.4 × 10⁻¹⁴). Basic lead carbonate (2PbCO₃·Pb(OH)₂), known as white lead, was the most important white pigment for millennia until its toxicity led to replacement by titanium dioxide.

참여 물질

역할 물질 계수 상태
반응물 탄산나트륨 Na₂CO₃ 1 (aq)
생성물 질산나트륨 NaNO₃ 2 (aq)

일상 속 예시

White lead paint was used in homes for centuries before being banned due to lead poisoning, especially dangerous for children.

산업적 중요성

납 이온이 포함된 폐수 처리 시 탄산염을 이용한 침전 제거에 활용됩니다. 납 화합물 안료(연백, 크론베일)의 역사적 전구체입니다.

자주 묻는 질문

What is the equation for 탄산납 침전?
The balanced equation is: Pb(NO₃)₂ + Na₂CO₃ → PbCO₃↓ + 2NaNO₃.
What type of reaction is 탄산납 침전?
탄산납 침전 is a 침전 reaction.
Is 탄산납 침전 exothermic or endothermic?
탄산납 침전 is exothermic (releases energy). The enthalpy change (ΔH) is -22.0 kJ/mol.