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Modify: 2024-04-27. Description. At room temperature, sodium hydroxide is a white crystalline odorless solid that absorbs moisture from the air. It is a manufactured substance. When dissolved in water or neutralized with acid it liberates substantial heat, which may be sufficient to ignite combustible materials.
Physical properties. Pure sodium hydroxide is a colorless crystalline solid that melts at 318 °C (604 °F) without decomposition and boils at 1,388 °C (2,530 °F). It is highly soluble in water, with a lower solubility in polar solvents such as ethanol and methanol. [14] Sodium hydroxide is insoluble in ether and other non-polar solvents.
- NaOH
- 39.9971 g/mol
- 323 °C (613 °F; 596 K)
- 418 g/L (0 °C), 1000 g/L (25 °C), 3370 g/L (100 °C)
sodium hydroxide (NaOH), a corrosive white crystalline solid that contains the Na + ( sodium) cation and the OH − ( hydroxide) anion. It readily absorbs moisture until it dissolves. Sodium hydroxide is the most widely used industrial alkali and is often used in drain and oven cleaners. It is highly corrosive to animal and vegetable tissue.
- The Editors of Encyclopaedia Britannica
Apr 15, 2024 · Sodium hydroxide is a strong base, meaning it reacts vigorously with acids to form water and a salt. This type of reaction is known as a neutralization reaction. The below equation shows how sodium hydroxide reacts with hydrochloric acid to produce sodium chloride (table salt) and water. Equation: NaOH (aq) + HCl (aq) → NaCl (aq) + H₂O (l)
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Jul 14, 2023 · 2 NaOH + SO2 → Na2SO3 + H2O. 6 NaOH + P2O5 → 2 Na3PO4 + 3 H2O. (iii) The Reaction of NaOH With Ammonium Salt. When a solution made up of sodium hydroxide and an ammonium salt is heated the process results in the liberation of Ammonia gas. NaOH + NH4Cl → NaCl + NH3↑ + H2O.
Sodium hydroxide; Information on this page: Gas phase thermochemistry data; Reaction thermochemistry data; Gas phase ion energetics data; References; Notes; Other data available: Condensed phase thermochemistry data; Data at other public NIST sites: Microwave spectra (on physics lab web site) Computational Chemistry Comparison and Benchmark ...
Oct 14, 2022 · Municipal water treatment facilities use sodium hydroxide to control water acidity and to help remove heavy metals from water. Sodium hydroxide is also used to produce sodium hypochlorite, a water disinfectant. OSHA has set guidelines and permissible exposure limits for workers in industries and facilities where sodium hydroxide substances are ...
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