n.

The radical group HCO₃ or a compound, such as sodium bicarbonate, containing it.

A salt of carbonic acid, or the dissociated ion HCO^-₃. The extracellular fluids of the body (blood plasma and tissue fluid) contain 20-25 mmol/litre of bicarbonate (about a quarter of the concentration of chloride). Regulation of its concentration (by the kidneys) relative to that of carbon dioxide (altered by changes in breathing) is crucial to the function of maintaining acid-base homeostasis. Ingestion of bicarbonate is a common remedy for ‘indigestion’, because it neutralizes stomach acid.

— Stuart Judge

See acid-base homeostasis; body fluids.

n

A salt resulting from the incomplete neutralization of carbonic acid such as from passing excess carbon dioxide into a base solution.

Ions formed as a by-product of carbonic acid. Bicarbonate ions are the main form by which carbon dioxide is transported in the blood. Bicarbonate is an important extracellular buffer, which helps neutralize the effects of hydrogen ions produced during anaerobic respiration.

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Any salt containing the HCO₃⁻ anion.

• blood b. — the bicarbonate of the blood plasma, an important parameter of acid–base balance measured in blood gas analysis. Called also plasma bicarbonate.
• b. buffering — major body buffering system in acid–base balance.
• plasma b. — see blood bicarbonate (above).
• b. of soda — sodium bicarbonate.

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IN BRIEF: A variety of carbonate, usually used in baking or as an antacid.

Sodium bicarbonate is used in making biscuits.

This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)

Dansk (Danish)
n. - bagepulver, tvekulsurt natron

idioms:

• bicarbonate of soda    bagepulver, tvekulsurt natron

Nederlands (Dutch)
bicarbonaat

Français (French)
n. - bicarbonate

idioms:

• bicarbonate of soda    bicarbonate de soude

Deutsch (German)
n. - Bikarbonat

idioms:

• bicarbonate of soda    Natriumbicarbonat, Natron

Ελληνική (Greek)
n. - διττανθρακικό νάτριο, μαγειρική σόδα

idioms:

• bicarbonate of soda    διττανθρακικό νάτριο, μαγειρική σόδα

Italiano (Italian)
bicarbonato

idioms:

• bicarbonate of soda    bicarbonato di sodio

Português (Portuguese)
n. - bicarbonato (m) (Quím.)

idioms:

• bicarbonate of soda    bicarbonato (m) de sódio (Quím.)

Русский (Russian)
двууглекислая соль

idioms:

• bicarbonate of soda    двууглекислый натрий, питьевая сода

Español (Spanish)
n. - bicarbonato

idioms:

• bicarbonate of soda    bicarbonato de sodio o sosa

Svenska (Swedish)
n. - bikarbonat

中文（简体） (Chinese (Simplified))
重碳酸盐

idioms:

• bicarbonate of soda    碳酸氢钠, 小苏打

中文（繁體） (Chinese (Traditional))
n. - 重碳酸鹽

idioms:

• bicarbonate of soda    碳酸氫鈉, 小蘇打

한국어 (Korean)
n. - 중탄산염, 중조

日本語 (Japanese)
n. - 炭酸水素塩, 重炭酸塩

idioms:

• bicarbonate of soda    重炭酸ソーダ, 重曹

العربيه (Arabic)
‏(الاسم) ثاني كربونات‏

עברית (Hebrew)
n. - ‮סודה לשתיה‬

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