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Sodium bisulfate is produced as an intermediate in the Mannheim process, an industrial process involving the reaction of sodium chloride and sulfuric acid: [1] NaCl + H 2 SO 4 → HCl + NaHSO 4. The process for the formation of sodium bisulfate is highly exothermic. The liquid sodium bisulfate is sprayed and cooled so that it forms a solid bead.
Sulfuric acid reacts with sodium chloride, and gives hydrogen chloride gas and sodium bisulfate: NaCl + H 2 SO 4 → NaHSO 4 + HCl. When combined with nitric acid, sulfuric acid acts both as an acid and a dehydrating agent, forming the nitronium ion NO + 2, which is important in nitration reactions involving electrophilic aromatic substitution.
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 temperature. Provided there is NaCl remaining in the generator and it is heated above 200 °C, the reaction proceeds further: NaCl + NaHSO 4 → Na 2 SO 4 + HCl↑
The most important chemical sodium sulfate production is during hydrochloric acid production, either from sodium chloride (salt) and sulfuric acid, in the Mannheim process, or from sulfur dioxide in the Hargreaves process. [21] The resulting sodium sulfate from these processes is known as salt cake. Mannheim: 2 NaCl + H 2 SO 4 → 2 HCl + Na 2 SO 4
The concept of neutralization is not limited to reactions in solution. For example, the reaction of limestone with acid such as sulfuric acid is also a neutralization reaction. [Ca,Mg]CO 3 (s) + H 2 SO 4 (aq) → (Ca 2+, Mg 2+)(aq) + SO 2− 4 (aq) + CO 2 (g) + H 2 O. Such reactions are important in soil chemistry.
In some reactions between highly reactive metals (usually from Group 1 or Group 2) and highly electronegative halogen gases, or water, the atoms can be ionized by electron transfer, [16] a process thermodynamically understood using the Born–Haber cycle. [17] Salts are formed by salt-forming reactions. A base and an acid, e.g., NH 3 + HCl → ...
However, it is the combination of (and resulting chemical reaction between) the cocoa powder, buttermilk, vinegar, and baking soda that produces the cake’s unmistakable smooth, velvety texture ...
Oxidizing acids, being strong oxidizing agents, can often oxidize certain less reactive metals, in which the active oxidizing agent is not H + ions. For example, copper is a rather unreactive metal, and has no reaction with concentrated hydrochloric acid.