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potassium chloride
potassium chloride chemical compound, KCl, a colorless or white, cubic, crystalline compound that closely resembles common salt (sodium chloride). It is soluble in water, alcohol, and alkalies. Potassium chloride occurs pure in nature as the mineral sylvite and is found combined in many minerals an...
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potassium carbonate
potassium carbonate chemical compound, K 2 CO 3 , white, crystalline, deliquescent substance that forms a strongly alkaline water solution. It is available commercially as a white, granular powder commonly called potash, or pearl ash. It was originally obtained from wood ashes or from the residue l...
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potassium
potassium , a metallic chemical element; symbol K [Lat. kalium =alkali]; at. no. 19; at. wt. 39.0983; m.p. 63.25°C; b.p. 760°C; sp. gr. .862 at 20°C; valence +1.
Potassium is a soft, silver-white metal. Physically and chemically it resembles the other alkali metals in Group 1 of ...
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potassium hydroxide
potassium hydroxide chemical compound with formula KOH. Pure potassium hydroxide forms white, deliquescent crystals. For commercial and laboratory use it is usually in the form of white pellets. A strong base, it dissolves readily in water, giving off much heat and forming a strongly alkaline, caus...
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potassium nitrate
potassium nitrate chemical compound, KNO 3 , occurring as colorless, prismatic crystals or as a white powder; it is found pure in nature as the mineral saltpeter, or niter. (The name saltpeter is also applied to sodium nitrate , although less frequently.) It is slightly soluble in cold water and v...
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K
K 11th letter of the alphabet . It is a usual symbol for a voiceless velar stop, as in the English cook. It corresponds to Greek kappa. In chemistry K is the symbol for the element potassium .
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tartar
tartar or argol , impure potassium hydrogen tartrate deposited as a crust in fermenting vessels during wine making. When purified, it yields cream of tartar . Tartar is the chief natural source of tartaric acid .
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alkali
alkali [Arab., al-gili =ashes of saltwort], hydroxide of an alkali metal . Alkalies are readily soluble in water and form strongly basic solutions with a characteristic acrid taste. They neutralize acids, forming salts and water. Strong alkalies (e.g., those of sodium or potassium) are sometime...
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cream of tartar
cream of tartar white crystalline powder. Chemically it is potassium hydrogen tartrate, KC 4 H 5 O 6 , the acidic potassium salt of tartaric acid . It is used as the leavening agent in baking powders. An impure form, called tartar or argol, forms naturally during the fermentation of grape juice in...
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diuretic
diuretic , drug used to increase urine formation and output. Diuretics are prescribed for the treatment of edema (the accumulation of excess fluids in the tissues of the body), which is often the result of underlying disease of the kidneys, liver, lungs, or heart (e.g., congestive heart failure )...
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