Iron(II) Sulfide Precipitation

FeSO4 + Na2S → FeS↓ + Na2SO4

개요

Iron(II) sulfate reacts with sodium sulfide to form a black precipitate of iron(II) sulfide (Ksp = 6 × 10⁻¹⁸). FeS reacts with dilute acids to produce hydrogen sulfide gas with its characteristic rotten egg smell. The mineral form is troilite, found in meteorites.

참여 물질

역할 물질 계수 상태
생성물 Sodium Sulfate Na₂SO₄ 1 (aq)

일상 속 예시

The black spots in hard-boiled eggs at the yolk-white junction are iron sulfide, formed by reaction of iron in the yolk with sulfur from the egg white.

산업적 중요성

중금속 황화물 침전을 이용한 산업 폐수의 금속 이온 제거에 활용됩니다. 황화철 광물은 황철석(pyrite)과 연관되며 지구화학 연구에 중요합니다.

성질

유형
Precipitation
가역 반응
아니오
에너지
발열
ΔH
-75.0 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 Lead Chloride Precipitation Iron(III) Hydroxide Precipitation

Frequently Asked Questions

What is the equation for Iron(II) Sulfide Precipitation?
The balanced equation is: FeSO₄ + Na₂S → FeS↓ + Na₂SO₄.
What type of reaction is Iron(II) Sulfide Precipitation?
Iron(II) Sulfide Precipitation is a precipitation reaction.
Is Iron(II) Sulfide Precipitation exothermic or endothermic?
Iron(II) Sulfide Precipitation is exothermic (releases energy). The enthalpy change (ΔH) is -75.0 kJ/mol.