what is dilute hydrochloric acid
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Answer:
Dilute hydrochloric acid is often used in the extraction of basic substances from mixtures or in the removal of basic impurities. The dilute acid converts the base such as ammonia or an organic amine into water soluble chloride salt.
Dilute Hydrocloric Acid ( HCl )
HCl gas saturates in water at room T and 1 atmosphere pressure at about 37% HCl . The solution is essentially one of H3O+ and Cl- . If additional water is present the solution becomes DILUTED so dilute acid is not a specific term. So dilute acid depends on the specific application. 50% gets rid of most of the HCl gas fumes but is still nasty to work with. Maybe several % is considered “dilute” . In any case working with any acid should be done observing safety precautions eye and skin protection and appropriate apparatus to include fume hoods when needed.