Potassium Reacting with Water

2K + 2H2O → 2KOH + H2

개요

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.

참여 물질

역할 물질 계수 상태
반응물 Potassium K 2 (s)
반응물 Water H₂O 2 (l)
생성물 Hydrogen H 1 (g)
생성물 Potassium Hydroxide KOH 2 (aq)

일상 속 예시

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

산업적 중요성

수산화칼륨(가성칼리)은 비누 제조, 배터리 전해질, 비료 생산에 사용되는 중요한 공업용 알칼리입니다.

성질

유형
Single Replacement
가역 반응
아니오
에너지
발열
ΔH
-392.2 kJ/mol

관련 반응

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.