Synopsis
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 Excerpt: ...of chlorine? Give evidence. 9 Would this lead you to conclude that the element from which the gas was derived was more or less active than chlorine? Give evidence. References. White, page 8i; McPherson and Henderson, page 176; Peters, page 10a; Newell, page 511. Rot-Book EXERCISE Ha8o FLUORINE AND ITS COMPOUNDS. i Did your experiment with hydrofluoric acid lead you to conclude that fluorine was or was not a very active element? 2 Where would you be inclined to place fluorine in its relation to the other elements? 3 Compare hydrofluoric acid with the corresponding acids of chlorine, bromine and iodine. 4 Suppose fluorine to be passed into a test tube containing a little chloride of sodium, do you think there would be a reaction? Upon what evidence do you base your opinion? 5 Looking upon the halogens in the form of a series, with iodine at one end and fluorine at the other, what properties should you suggest would belong to fluorine? 6 Write the reactions between hydrofluoric acid and five different metals. Keep your list of fluorides for the written exercise. 7 No compound of fluorine and oxygen or fluorine and chlorine has yet been discovered. Does this seem strange to you considering the chemical activity of the elements concerned? Does this seem to illustrate any general principle underlying the chemical affinity of one element for another? Written Exercises. a Take your list of fluorides prepared by the action of hydrofluoric acid and the metals and look up in any large treatise something about their properties. b The use of hydrofluoric acid in the etching of glass. c Make out, in the form of a table, a careful summary of the various properties of the halogens, including fluorine. Compositions. i The preparation of fluorine gas. a The properties of flu...
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