Elementary Chemistry
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In our eReader you can find the full English version of the book. Read Elementary Chemistry Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Elementary Chemistry
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Traces of iodine compounds are contained in sea-water, and larger quantities in sea-weeds, espe- cially in those which grow at great depths. The manufacture of io- dine from sea- weeds is carried on in Scotland and France. The weeds are first burned, and by systematic- ally treating the ashes with water a liquid is finally ob- tained which contains the iodides. This is mixed with manganese dioxide and sulphuric acid and distilled. The vapor of iodine is liberated and is condensed in pear-shaped... clay receivers : Mn0 2 + 3H 2 S0 4 = 2H 2 + I 2 .
FIG. 50. Extraction of iodine.
2NaHS0 4 + MnS0 4 1 This experiment is due to Newth, Chemical Lecture Experiments, p. 104 BROMINE AND IODINE 259 The apparatus used is shown in Fig. 50. The iodine is purified by distillation.
Small quantities of potassium iodate, KI0 3, correspond- ing to potassium chlorate, KC10 3, are contained in the sodium nitrate deposits of Chili (p. 116). The preparation of iodine from this source has become of great importance and threatens soon to displace altogether the production of iodine from sea-weed.
What to read after Elementary Chemistry?
You can find similar books in the "Read Also" column, or choose other free books by Robert Hart Bradbury to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Traces of iodine compounds are contained in sea-water, and larger quantities in sea-weeds, espe- cially in those which grow at great depths. The manufacture of io- dine from sea- weeds is carried on in Scotland and France. The weeds are first burned, and by systematic- ally treating the ashes with water a liquid is finally ob- tained which contains the iodides. This is mixed with manganese dioxide and sulphuric acid and distilled. The vapor of iodine is liberated and is condensed in pear-shaped... clay receivers : Mn0 2 + 3H 2 S0 4 = 2H 2 + I 2 .
FIG. 50. Extraction of iodine.
2NaHS0 4 + MnS0 4 1 This experiment is due to Newth, Chemical Lecture Experiments, p. 104 BROMINE AND IODINE 259 The apparatus used is shown in Fig. 50. The iodine is purified by distillation.
Small quantities of potassium iodate, KI0 3, correspond- ing to potassium chlorate, KC10 3, are contained in the sodium nitrate deposits of Chili (p. 116). The preparation of iodine from this source has become of great importance and threatens soon to displace altogether the production of iodine from sea-weed.
What to read after Elementary Chemistry?
You can find similar books in the "Read Also" column, or choose other free books by Robert Hart Bradbury to read onlineMoreLess
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