Potassium Reacting with Water

2K + 2H₂O → 2KOH + H₂

ภาพรวม

Potassium reacts even more violently with water than sodium, instantly producing potassium hydroxide and hydrogen gas. The hydrogen ignites immediately with a characteristic lilac/violet flame from potassium vapor. The reaction can cause small explosions due to its extreme vigor.

ผู้เข้าร่วม

บทบาท	สาร	สัมประสิทธิ์	สถานะ
สารตั้งต้น	Potassium K	2	(s)
สารตั้งต้น	Water H₂O	2	(l)
ผลิตภัณฑ์	Hydrogen H	1	(g)
ผลิตภัณฑ์	Potassium Hydroxide KOH	2	(aq)

ตัวอย่างในชีวิตประจำวัน

Chemistry demonstrations with potassium in water produce a spectacular violet flame as the evolved hydrogen ignites spontaneously.

ความสำคัญทางอุตสาหกรรม

Potassium hydroxide (caustic potash) is an important industrial alkali used in soap making, battery electrolyte, and fertilizer production.

คุณสมบัติ

ประเภท: Single Replacement
ย้อนกลับได้: ไม่
พลังงาน: คายความร้อน
ΔH: -392.2 kJ/mol

ปฏิกิริยาที่เกี่ยวข้อง

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Frequently Asked Questions

What is the equation for Potassium Reacting with Water?

The balanced equation is: 2K + 2H₂O → 2KOH + H₂.

What type of reaction is Potassium Reacting with Water?

Potassium Reacting with Water is a single replacement reaction.

Is Potassium Reacting with Water exothermic or endothermic?

Potassium Reacting with Water is exothermic (releases energy). The enthalpy change (ΔH) is -392.2 kJ/mol.