| 单词 | sodium bicarbonate |
| 释义 | sodium bicarbonateSEE SYNONYMS FOR sodium bicarbonate ON THESAURUS.COM noun Chemistry, Pharmacology.a white, crystalline, water-soluble solid, in powder or granules, NaHCO3, usually prepared by the reaction of soda ash with carbon dioxide or obtained from the intermediate product of the Solvay process by purification: used chiefly in the manufacture of sodium salts, baking powder, and beverages, as a laboratory reagent, as a fire extinguisher, and in medicine as an antacid. Also called bicarbonate of soda, baking soda, sodium acid carbonate. Origin of sodium bicarbonateFirst recorded in 1880–85 Words nearby sodium bicarbonatesodium ammonium phosphate, sodium amytal, sodium arsenite, sodium barbital, sodium benzoate, sodium bicarbonate, sodium bisulfate, sodium borate, sodium bromide, sodium carbonate, sodium chlorate Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for sodium bicarbonate
British Dictionary definitions for sodium bicarbonatesodium bicarbonate nouna white crystalline soluble compound usually obtained by the Solvay process and used in effervescent drinks, baking powders, fire extinguishers, and in medicine as an antacid; sodium hydrogen carbonate. Formula: NaHCO 3Also called: bicarbonate of soda, baking soda Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for sodium bicarbonatesodium bicarbonate n.baking soda The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for sodium bicarbonatesodium bicarbonate A white crystalline compound used in beverages and as a leavening agent to make baked goods. In medicine, sodium bicarbonate is used as an antacid and cleanser and to replenish electrolytes. Also called baking soda, bicarbonate of soda. Chemical formula: NaHCO3. A Closer LookA white, chalky powder, sodium bicarbonate also goes by its household name, baking soda. Sodium bicarbonate is a base and reacts with acids in what is called neutralization, because both the acid and the base are converted into more neutral substances on the pH scale. Neutralization with sodium bicarbonate usually produces carbon dioxide gas, which bubbles forth whenever vinegar (an acid) and baking soda are mixed (as they frequently are in kitchen science experiments). Such reactions are an important factor in baking, where the production of the gas is what causes cakes to rise. Sodium bicarbonate has long been used in small amounts (about a half teaspoon) mixed with water to neutralize excess stomach acid. Sodium bicarbonate also has the unique ability to neutralize substances that are more basic than it is. It can do this because in water, sodium bicarbonate breaks down ultimately into carbonic acid (H2CO3), an unstable acid, which can then react with a base to neutralize it. This ability to neutralize both acids and many bases is why baking soda is so effective at reducing odors. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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