Experimental Chemistry for Junior Students Pt. 3
Experimental Chemistry for Junior Students Pt. 3
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In our eReader you can find the full English version of the book. Read Experimental Chemistry for Junior Students Pt. 3 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 Experimental Chemistry for Junior Students Pt. 3
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The crude mercury is filtered through linen, and is then sent into commerce in stout bottles of wrought fa-on.
Experiment 450. — Introduce some crude mercury 92 Experimental Chemistry, into a small retort, and apply heat. When the tem- perature reaches 357° C the mercury boils, and the vapour condenses in the neck of the retort and trickles into a receiver. It is difficult to avoid * bumping * as the liquid boils, but a steady tempera- ture best secures a regular ebullition. Any impurities, suc...h as lead, zinc, copper, &a, are left in the retort, and the distillate is pure mercury.
The impurities just referred to when present in mercury maike a globule * tail * when allowed to run along a board ; this is due to the rapid oxidation of the impurities, whereby a scum of oxide of lead, zinc, &a, is formed, and this interferes with the free movement of the drop which is then drawn out to a pear-shaped form. Distillation is the best mode of purification, though occasional agitation during several days with a solution of mercuric nitrate (see Experi- ment 456) is also effectual when rapid treatment is not necessary.
What to read after Experimental Chemistry for Junior Students Pt. 3?
You can find similar books in the "Read Also" column, or choose other free books by James Emerson Reynolds to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The crude mercury is filtered through linen, and is then sent into commerce in stout bottles of wrought fa-on.
Experiment 450. — Introduce some crude mercury 92 Experimental Chemistry, into a small retort, and apply heat. When the tem- perature reaches 357° C the mercury boils, and the vapour condenses in the neck of the retort and trickles into a receiver. It is difficult to avoid * bumping * as the liquid boils, but a steady tempera- ture best secures a regular ebullition. Any impurities, suc...h as lead, zinc, copper, &a, are left in the retort, and the distillate is pure mercury.
The impurities just referred to when present in mercury maike a globule * tail * when allowed to run along a board ; this is due to the rapid oxidation of the impurities, whereby a scum of oxide of lead, zinc, &a, is formed, and this interferes with the free movement of the drop which is then drawn out to a pear-shaped form. Distillation is the best mode of purification, though occasional agitation during several days with a solution of mercuric nitrate (see Experi- ment 456) is also effectual when rapid treatment is not necessary.
What to read after Experimental Chemistry for Junior Students Pt. 3?
You can find similar books in the "Read Also" column, or choose other free books by James Emerson Reynolds to read onlineMoreLess
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