Water of ammonia

Experiments are carried out at atmospheric pressure on the absorption into water of ammonia from a mixture of hydrogen and nitrogen, both of which may be taken as insoluble in the water. For a constant mole fraction of 0.05 of ammonia, it is found that the absorption rate is 25 per cent higher when the molar ratio of hydrogen to nitrogen is changed from 1 1 to 4 1. Is this result consistent with the assumption of a steady-state gas-film controlled process and, if not, what suggestions have you to make to account for the discrepancy ... 

Take of Water of ammonia, four fluid ounces ... 

Sulphocyanide of Ammonium. Saturate 2 parts of common water of ammonia (specific gravity 0.950) with sulphuretted hydrogen and add 6 ports of the same ammonia. To this mixture add 2 parts of sulphur, and the product of the distillation of 6 parts of pnissiate of potash, 3 of sulphuric acid, and 18 of water. Digest till the sulphur is no longer acted on, and the liquid becomes yellow. Boil tho liquid till it becomes colorless, filter, evaporate, and crystallize. 

Solution of Hydrosulpburet of Ammonia. Saturate strong water of ammonia with sulphuretted hydrogen gas, then add a second portion of water of ammonia, equal to that first used, aud put into well-stoppered bottles. 

Solution of Citrate of Bismuth and Ammonia, Rub some citrate of bismuth with. distilled water to reduce it to a uniform pasty consistence, and add cautiously, with constant trituration, strong water of ammonia until a solution is obtained, observing to avoid an excess of ammonia. Filter tho liquid through paper, returning the first portions that pass, should they be turbid. 

Solution of Citrate of Iron. Dilute 1 pint of solution of tersulphate of iron with 2 pints distilled water precipitate with water of ammonia in slight excess, constantly stirring. Transfer the precipitate to a muslin strainer, and wash it with water until the washings are nearly tasteless. Drain it, and put half of it in a porcelain capsule on a water-bath heated to 150° Fabr., add 5 troy ounces citric acid in coarse powder, and stir until the precipitate is nearly dissolved then add sufficient of the reserved precipitate to fully saturate the acid. Lastly, filter tho liquid, evaporate it at a temperature not over lo0° Fahr, until it measures a pint. (U. S, Dis,)... 

Liniment for Old Bheumatic Pains. A powerful liniment for old rheumatic pains, especially when affecting the loins, is the following Camphorated oil and spirits of turpentine, of each 2 parts water of ammonia, 1 part laudanum, I part to bo well shaken together. 

MCustard Oil Ointment. Crude mustard-seed oil, 10 fluid ounces ethereal oil of mustard. 30 drops water of ammonia. 4 fluid ounces, or a sumcient quantity to form into a soap. Mix and bottle iu broad-monthed phials containing about 2 ounces. 

Ward s Essence for the Headache. Spirit of wine, 2 pounds roche alum in fine powder, 2 ounces camphor, 4 ounces essence of lemon, 4 ounce strong water of ammonia, 4 ouuoes stop the bottle close, and shake it daily for 3 or 4 days. 

II. Rectified spirits, 8 pints white soap, 20 ounces camphor, 8 ounces water of ammonia, 4 ounces oil of rosemary, 1 ounce oil of horsemint, 1 ounce dissolve the soap In the spirit by a gentle heat, and add the other ingredients. Bottle whilst warm. 

Those solutes which are capable of forming hydrogen bonds have a well known affinity for the solvents with a similar characteristic, which is the case of water. The formation of hydrogen bonds between solute molecules and those of the solvent explains, for example, the good solubility in water of ammonia and of the short chain organic acids. 

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