A text-book on chemistryFor the use of schools and colleges . xide may be col-lected at the water-trough. The production of oxalic acid from sugar by nitricacid is clue to the replacement of hydrogen by an equiv-alent quantity of oxygen. Cl2H9 09+ 018= C12 O^q+JIq Oq ;that is, one atom of dry sugar, with eighteen of oxygen,yield six of oxalic acid and nine of water. Salts of Oxalic are three potassa salts: 1st. Neutral Oxalateof Potassa, made by neutralizing oxalic acid with car-bonate of potassa, crystallizes in rhombic prisms, solublein three times their weight of water. 2d. Binox
A text-book on chemistryFor the use of schools and colleges . xide may be col-lected at the water-trough. The production of oxalic acid from sugar by nitricacid is clue to the replacement of hydrogen by an equiv-alent quantity of oxygen. Cl2H9 09+ 018= C12 O^q+JIq Oq ;that is, one atom of dry sugar, with eighteen of oxygen,yield six of oxalic acid and nine of water. Salts of Oxalic are three potassa salts: 1st. Neutral Oxalateof Potassa, made by neutralizing oxalic acid with car-bonate of potassa, crystallizes in rhombic prisms, solublein three times their weight of water. 2d. Binoxalate ofPotassa, made by dividing a solution of oxalic acid intotwo parts, neutralizing one with carbonate of potassaand then adding the other. It crystallizes in rhombicprisms, has a sour taste, dissolves in forty parts of wa-ter, and is found naturally in many plants, as sorrel and What change takes place when the water of crystallization is driv-en off? Describe the production of carbonic oxide. Name the po-tassa salts of oxalic acid. How arc thev made ?. 400 SALTS OF OXALIC ACID. rhubarb. 3d. Quadroxcilate of Potassa, made by divid-ing a solution of oxalic acid into four parts, neutralizingone and adding the rest. It crystallizes in octahedra,and is less soluble than either of the foregoing. Thesesalts are sometimes used for the removal of ink stainsfrom linen. Oxalate of Ammonia, prepared by neutralizing a hotsolution of oxalic acid with carbonate of ammonia. Itcrystallizes in rhombic prisms which are solution is used, as has been already stated, as a testand precipitant of lime. When exposed to heat in a re-tort, it is for the most part decomposed into water, am-monia, carbonic acid, cyanogen, and other compounds;but a flocculent substance called Oxamide also sublimes,the constitution of which is /72(92,iV^=W2+2(CO),that is, containing the constituents of oae atom of amid-ogen and two of carbonic oxide. This remarkable sub-stance, when boiled with potassa
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