Potassium Reacting with Water

2K + 2H₂O → 2KOH + H₂

Обзор

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.

Участники

Роль	Вещество	Коэффициент	Состояние
Реагент	Potassium K	2	(s)
Реагент	Water H₂O	2	(l)
Продукт	Hydrogen H	1	(g)
Продукт	Potassium Hydroxide KOH	2	(aq)

Пример из жизни

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

Промышленное значение

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

Свойства

Тип: Single Replacement
Обратимая: Нет
Энергия: Экзотермическая
ΔH: -392,2 kJ/mol

Связанные реакции

Aluminum Reacting with Iron(III) Oxide (Thermite) Chlorine Displacing Iodine from Potassium Iodide Magnesium Reacting with Steam Lithium Reacting with Water Aluminum Reacting with Hydrochloric Acid Aluminum Reducing Chromium Oxide (Aluminothermic) Iron Reacting with Hydrochloric Acid Iron Displacing Copper from Copper Sulfate Zinc Displacing Copper from Copper Sulfate Fluorine Displacing Chlorine from Sodium Chloride

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.