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Hydrochloric acid, also known as muriatic acid or spirits of salt, is an aqueous solution of hydrogen chloride (HCl). It is a colorless solution with a distinctive pungent smell. It is classified as a strong acid. It is a component of the gastric acid in the digestive systems of most animal species, including humans.
Small amounts of hydrogen chloride for laboratory use can be generated in an HCl generator by dehydrating hydrochloric acid with either sulfuric acid or anhydrous calcium chloride. Alternatively, HCl can be generated by the reaction of sulfuric acid with sodium chloride: [17] NaCl + H 2 SO 4 → NaHSO 4 + HCl↑. This reaction occurs at room ...
The solvent (e.g. water) is omitted from this expression when its concentration is effectively unchanged by the process of acid dissociation. The strength of a weak acid can be quantified in terms of a dissociation constant , K a {\displaystyle K_{a}} , defined as follows, where [ X ] {\displaystyle {\ce {[X]}}} signifies the concentration of a ...
In chemistry, a superacid (according to the original definition) is an acid with an acidity greater than that of 100% pure sulfuric acid (H 2 SO 4), [1] which has a Hammett acidity function (H 0) of −12.
Ingestion of ammonium chloride, hydrochloric acid, or other acidifying salts; The treatment and recovery phases of diabetic ketoacidosis; Volume resuscitation with 0.9% normal saline provides a chloride load, so that infusing more than 3–4L can cause acidosis; Hyperalimentation (i.e., total parenteral nutrition)
Acid–base extraction is a subclass of liquid–liquid extractions and involves the separation of chemical species from other acidic or basic compounds. [1] It is typically performed during the work-up step following a chemical synthesis to purify crude compounds [2] and results in the product being largely free of acidic or basic impurities.
It is also used as a buffering agent for strong mineral acids to increase their pH, as a food additive (E237), and as a de-icing agent. In structural biology , sodium formate can be used as a cryoprotectant for X-ray diffraction experiments on protein crystals, [ 6 ] which are typically conducted at a temperature of 100 K to reduce the effects ...
The heat of dilution can be defined from two perspectives: the differential heat and the integral heat. The differential heat of dilution is viewed on a micro scale, which is associated with the process in which a small amount of solvent is added to a large quantity of solution. The molar differential heat of dilution is thus defined as the enthalpy
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