Magnesium Hydroxide Precipitation

MgCl2 + 2NaOH → Mg(OH)2↓ + 2NaCl

ภาพรวม

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.

ผู้เข้าร่วม

บทบาท สาร สัมประสิทธิ์ สถานะ
สารตั้งต้น Sodium Hydroxide NaOH 2 (aq)
ผลิตภัณฑ์ Magnesium Hydroxide Mg(OH)₂ 1 (s)
ผลิตภัณฑ์ Sodium Chloride NaCl 2 (aq)

ตัวอย่างในชีวิตประจำวัน

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

ความสำคัญทางอุตสาหกรรม

Magnesium hydroxide is used as an antacid, flame retardant (replacing halogenated compounds), and in wastewater treatment for heavy metal removal.

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.