Magnesium Hydroxide Precipitation

MgCl2 + 2NaOH → Mg(OH)2↓ + 2NaCl

개요

Magnesium chloride reacts with sodium hydroxide to form a white precipitate of magnesium hydroxide (Ksp = 5.6 × 10⁻¹²). The milky white suspension is commonly known as milk of magnesia. Mg(OH)₂ is a weak base that slowly neutralizes acid.

참여 물질

역할 물질 계수 상태
반응물 Sodium Hydroxide NaOH 2 (aq)
생성물 Magnesium Hydroxide Mg(OH)₂ 1 (s)
생성물 Sodium Chloride NaCl 2 (aq)

일상 속 예시

Milk of magnesia antacid is a suspension of this precipitate that neutralizes stomach acid gradually and acts as a gentle laxative.

산업적 중요성

해수에서 마그네슘 금속 제련을 위한 전구체 침전에 사용됩니다(다우 공정). 제약용 제산제·완하제, 난연제(플라스틱 첨가제), 폐수의 중금속 이온 공침 제거에 활용됩니다.

성질

유형
Precipitation
가역 반응
아니오
에너지
발열
ΔH
-41.0 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 Magnesium Hydroxide Precipitation?
The balanced equation is: MgCl₂ + 2NaOH → Mg(OH)₂↓ + 2NaCl.
What type of reaction is Magnesium Hydroxide Precipitation?
Magnesium Hydroxide Precipitation is a precipitation reaction.
Is Magnesium Hydroxide Precipitation exothermic or endothermic?
Magnesium Hydroxide Precipitation is exothermic (releases energy). The enthalpy change (ΔH) is -41.0 kJ/mol.