Potassium Reacting with Water

2K + 2H₂O → 2KOH + H₂

Tổng quan

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.

Người tham gia

Vai trò	Chất	Hệ số	Trạng thái
Chất phản ứng	Potassium K	2	(s)
Chất phản ứng	Water H₂O	2	(l)
Sản phẩm	Hydrogen H	1	(g)
Sản phẩm	Potassium Hydroxide KOH	2	(aq)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

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

Tính chất

Loại: Single Replacement
Thuận nghịch: Không
Năng lượng: Tỏa nhiệt
ΔH: -392,2 kJ/mol

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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.