Calcium Reacting with Water

Ca + 2H₂O → Ca(OH)₂ + H₂

ภาพรวม

Calcium reacts with water to produce calcium hydroxide (limewater) and hydrogen gas. The reaction is moderately vigorous, producing a milky suspension of sparingly soluble calcium hydroxide. Calcium sinks in water (unlike sodium) and reacts at the bottom of the vessel.

ผู้เข้าร่วม

บทบาท	สาร	สัมประสิทธิ์	สถานะ
สารตั้งต้น	Calcium Ca	1	(s)
สารตั้งต้น	Water H₂O	2	(l)
ผลิตภัณฑ์	Calcium Hydroxide Ca(OH)₂	1	(s)
ผลิตภัณฑ์	Hydrogen H	1	(g)

ตัวอย่างในชีวิตประจำวัน

The milky appearance of hard water deposits and limescale is related to calcium hydroxide and carbonate formation from calcium's reactions in water.

ความสำคัญทางอุตสาหกรรม

Understanding calcium-water reactions is important for water hardness treatment, concrete chemistry, and calcium hydroxide production for industrial applications.

คุณสมบัติ

ประเภท: Single Replacement
ย้อนกลับได้: ไม่
พลังงาน: คายความร้อน
ΔH: -635.1 kJ/mol

ปฏิกิริยาที่เกี่ยวข้อง

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Frequently Asked Questions

What is the equation for Calcium Reacting with Water?

The balanced equation is: Ca + 2H₂O → Ca(OH)₂ + H₂.

What type of reaction is Calcium Reacting with Water?

Calcium Reacting with Water is a single replacement reaction.

Is Calcium Reacting with Water exothermic or endothermic?

Calcium Reacting with Water is exothermic (releases energy). The enthalpy change (ΔH) is -635.1 kJ/mol.