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In our daily lives, some common chemicals have alkalinity. For example, soap, alkaline batteries, etc. are all alkaline substances. In the field of chemistry, what is the difference between the alkali and pure alkali that we often hear about? Next, this article will delve into the differences between alkali and soda ash, taking you through a comprehensive understanding of these two common alkaline substances

Let's introduce the definitions of alkali and soda ash. Alkali refers to a type of compound or solution with alkalinity, which can neutralize acids while possessing some special physical and chemical properties. And soda ash refers to sodium hydroxide NaOH, also known as caustic soda. Soda ash is a solid substance with strong alkalinity, commonly used in industrial production and laboratories

Alkali and soda ash also have some differences in chemical properties. The acid-base indicator of alkaline substances often changes color above 7, while the acid-base indicator of pure alkali will quickly change color and destroy the structure of the indicator. In addition, in terms of physical and chemical properties, soda ash is soluble in water, generating a solution of sodium hydroxide, while alkaline substances contain a series of compounds with different solubility and ion reactivity

In terms of usage, soda ash is mainly used in industrial production such as glass, textiles, and papermaking. Alkaline substances are widely used in daily life such as cleaning and washing. Taking soap as an example, it is a compound obtained by the reaction of fatty acids and alkaline substances, which has a cleaning effect. In addition, alkaline batteries are also a common product that utilizes the characteristics of alkaline substances and electrolytes to provide electricity

We need to pay attention to the differences in safety between alkali and soda ash. Soda ash is a corrosive substance that can cause irritation and damage to the skin and eyes when in contact. Therefore, it is necessary to wear personal protective equipment and avoid contact when using it. The safety of alkaline substances is relatively high, and common ones are harmless to the human body. But it is also important to avoid prolonged contact to avoid discomfort to the skin

In summary, although both alkali and soda ash belong to alkaline substances, there are some differences in their properties, uses, and safety. Soda ash is a specific compound with strong alkalinity and plays an important role in industrial production; Alkaline substances are a series of compounds with alkalinity, widely used in daily cleaning and washing. When using, we should all pay attention to safety and avoid causing harm to the body. I hope that through the introduction in this article, everyone can have a deeper understanding of alkali and soda ash.