Dianfeng Chemical
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Sodium Sulfide Hydrochloric Acid
One day, I wanted to test the relationship between Sodium Sulfide and Hydrochloric Acid. Then I placed sodium sulfide in the container and slowly injected hydrochloric acid. In an instant, I saw the smell of rotten eggs escaping, which is the gas of hydrogen sulfide. The formula is: $Na_ {2} S + 2HCl = 2NaCl + H_ {2} S ↑ $. The public view of this change, the detailed recording of its images, thinking about its reasons, and the way of transformation, and entering another layer. This is all because of the good study of physical changes, and the scientific method is used to seek its truth.
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