Publisher's Synopsis
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 edition. Excerpt: ...heat, and the hydrogen will then also burst into flams. These experiments must be carried on with cantion, as, sometimes towards the end, & mass of sodium oxide (Note 8) is produced, and flies about; it is therefore best to cover (be vessel m which the experiment is carried on. Light does not aid the combination of hydrogen and oxygen, so that a mixture of these two gases does not change when exposed to the action of light; but an electric spark acts just like a flame, and this is taken advantage of for inflaming a mixture of oxygen and hydrogen, or detonating gas, inside a vessel, as will be explained in the following chapters. As hydrogen (and oxygen also) is condensed by spongy platinum, hy which a rise of temperature ensues, and as platinum acts by contact (Introduction), therefore hydrogen abo combines with oxygen, under the influence of platinum, as Dobereiner showed. If epongy platinum be thrown into a mixture of hydrogen and oxygen, an explosion takes place. If a mixture of the gases be passed over epongy platinum, combination also ensues, and the platinum becomes red.hot." Although gassous hydrogen does not act directly42 on many substances, yet in a nascent state reaction often takes place. Thus, for instance, water on which sodium amalgam is acting contains hydrogen in a nascent state. The hydrogen is here evolved from a liquid, and at the first moment of its formation must be in a condensed " This property of epongy platinum is made use of in the so.colled hydrogen cigar. lighter. It consists of a glass cylinder or beaker, inside which there is a email lead stand (which ie not acted on hy sulphuric acid), on which a piece of cine Is laid. This zinc to covered hy a bell, which is open at the bottom and furnished with a..."
