1. Electrolysis is is the first choice for the preparation of industrial hydrochloric acid: saturated salt water is electrolyzed to produce sodium hydroxide, hydrogen occurs in the cathode and chlor
(1) Absorbing water, a bottle of concentrated sulphuric acid is placed in the air, its mass will be added, its density will be reduced, its concentration will be reduced, and its volume will be incr
Industrial use: Hydrochloric acid is a strong inorganic acid, which is widely used in industrial processing, such as the essence of metals. Hydrochloric acid often determines the quality of products
Hydrochloric acid invades the human body mainly through inhalation or ingestion through the mouth and nose, and can also affect the skin. Damages to health are as follows: touching its steam or smok
1. Closed operation, pay attention to ventilation. The operation may be mechanized and automated. It is necessary for operators to undergo special training and strictly abide by the operating rules.
1. Sulphuric acid has strong irritation and corrosive effect on skin, mucosa and other tissues. 2. Steam or fog can cause conjunctivitis, conjunctival edema and corneal opacity, leading to blindnes