Transcription of Aqua Ammonia Info Manual - Airgas
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Aqua Ammonia Info Manual - Airgas
10 aqua AMMONIAC hemical PropertiespHAqua Ammonia (ammonium hydroxide) isclassified as a weak base. It ionizes much lesscompletely in water than does a strong base suchas sodium hydroxide. This is reflected in the pH snormally encountered with solutions of , the pH of an Ammonia solution will bebetween 11 and 12, compared with a pH of about14 for sodium hydroxide solutions. Thetheoretical pH s below are for Ammonia in purewater at 77 Constants (Kb s) of aqua AmmoniaFrom 0 C to 50 CTemperature x x x x x x x x x x x 10-5 , determined by emf method by Batesand PinchingNote: pKb = pKw-pKawhere pKw = 14 and pKa = [H+]{NH3]/[NH4+]Heat of SolutionWhen liquid anhydrous Ammonia is dissolved inwater, heat is liberated which varies with the finalconcentration of aqua Ammonia Wt % NH3 BTU/lb.}
12 AQUA AMMONIA Solubility Water and ammonia are miscible in all proportions. When one refers to the solubility of ammonia in water, it is usually meant to be the
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