The Practical Assayer, Containing Easy Methods for the Assay of the Principal Metals And Alloys, Principally Designed for Explorers And Those Interested in Mines
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In our eReader you can find the full English version of the book. Read The Practical Assayer, Containing Easy Methods for the Assay of the Principal Metals And Alloys, Principally Designed for Explorers And Those Interested in Mines 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 The Practical Assayer, Containing Easy Methods for the Assay of the Principal Metals And Alloys, Principally Designed for Explorers And Those Interested in Mines
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To quickly assess the difficulty of the text, read a short excerpt:
of liquid are gradually distilled over into a beaker (by means of a bent tube fixed on to the end of the retort) which contains 100 C. C. of sulphuric acid, diluted to the required strength. As soon as 50 or 60 C. C. have passed over, allow the retort to eool, and 40 C. C. of water are added 190 THE PRACTICAL ASSAYER.
to the retort ; distil again till this 40 C. C. has passed over, and once more repeat the same operation. A few drops of litmus are now added to the contents of the beaker, and th...e acid is neutralized by the standard alkali (caustic soda). This solution should be of such a strength that i C. C. equals an equal amount of acid solution originally introduced into the beaker.
Suppose, now, this acid solution in the flask requires 67 C.C. of alkali solution, instead of 100. It is evident that 33 C. C. have been neutralized by the ammonia ; a quantity of ammonia has passed over therefore = to 3*3 grammes of anhydrous soda. From the two equivalents of the two alkalies, we may cal- culate the ammonia thus : Na20 H3N 31 : 17 : : 3"3 : I'Sog x ip or 1 8 -09 per cent, of ammonia in the sample, if 10 grammes are taken.
What to read after The Practical Assayer, Containing Easy Methods for the Assay of the Principal Metals And Alloys, Principally Designed for Explorers And Those Interested in Mines?
You can find similar books in the "Read Also" column, or choose other free books by North, Oliver to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
of liquid are gradually distilled over into a beaker (by means of a bent tube fixed on to the end of the retort) which contains 100 C. C. of sulphuric acid, diluted to the required strength. As soon as 50 or 60 C. C. have passed over, allow the retort to eool, and 40 C. C. of water are added 190 THE PRACTICAL ASSAYER.
to the retort ; distil again till this 40 C. C. has passed over, and once more repeat the same operation. A few drops of litmus are now added to the contents of the beaker, and th...e acid is neutralized by the standard alkali (caustic soda). This solution should be of such a strength that i C. C. equals an equal amount of acid solution originally introduced into the beaker.
Suppose, now, this acid solution in the flask requires 67 C.C. of alkali solution, instead of 100. It is evident that 33 C. C. have been neutralized by the ammonia ; a quantity of ammonia has passed over therefore = to 3*3 grammes of anhydrous soda. From the two equivalents of the two alkalies, we may cal- culate the ammonia thus : Na20 H3N 31 : 17 : : 3"3 : I'Sog x ip or 1 8 -09 per cent, of ammonia in the sample, if 10 grammes are taken.
What to read after The Practical Assayer, Containing Easy Methods for the Assay of the Principal Metals And Alloys, Principally Designed for Explorers And Those Interested in Mines?
You can find similar books in the "Read Also" column, or choose other free books by North, Oliver to read onlineMoreLess
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