Laboratory preparation of hydrogen chloride gas
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This post was last edited by sunjl1981 on 2013-1-6 at 20:01. Hydrogen chloride gas is needed for experiments; I’m seeking help regarding simple methods for producing hydrogen chloride in the laboratory! Reaction conditions? # ， ， &
NaCl + H2SO4 (concentrated) === Na2SO4 + 2HCl↑
It can only be done under conditions where heating is required
Self-made versions are unsafe and not widely used; it is recommended to purchase them directly
Without using chemical methods, concentrated sulfuric acid can be added drop by drop to concentrated hydrochloric acid, causing hydrogen chloride gas to be released; this gas can be dried using concentrated sulfuric acid. This method does not require heating; it is a physical process that produces gas directly.
It depends on the amount you need; as mentioned above, heating NaCl with concentrated sulfuric acid is a high school chemistry experiment. Actually, since the price of hydrochloric acid is currently low (the price of industrially pure acid is around 200 per ton), it is possible to consider directly heating concentrated hydrochloric acid; this will also result in the release of a large amount of hydrogen chloride gas, following the same principle as when concentrated sulfuric acid is used. This post was last edited by yzhms on 2009-3-24 13:39.]
Phosphorus trichloride + concentrated sulfuric acid – this is the best option; it has a higher cost, but gas production is stable and the used bottles are easy to clean
Could Guiyangboy be more specific? How does one add it? Is heating required?:handshake
Using salt and concentrated sulfuric acid – it’s better to use a Qipu generator~~~
Generally, concentrated hydrochloric acid is dropped into concentrated sulfuric acid; this method is simple and does not require heating