An Introductory Course in Quantitative Chemical Analysis With Explanatory Notes
An Introductory Course in Quantitative Chemical Analysis With Explanatory Notes
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Oooo g. ; weight after heating (water driven off), 0. 8522 g. ; weight of silver chloride ob- 170 INTRODUCTORY COURSE IN QUANTITATIVE ANALYSIS tained, i . 1 73 5 g. ; weight of barium sulphate obtained, 0. 9594 g. Calculate : (a) the percentage of each constituent ; (6) the formula of the compound.
41. If two i. Oooo-g. Samples of a substance containing 10. 00% of MgO are weighed out, and the precipitate of MgNH 4 PO 4 . 6 H 2 is in one case contaminated with 0. 0250 g. Of Mg 3 (PO 4 )2, and in... the other case with 0. 0250 g. Of Mg[(NH 4 ) 2 P04]2, what percentages of MgO will be found if the calculations are based upon the assumption that the ignited precipi- tate in each case consists entirely of Mg 2 P2O7?
42. The carbonates of calcium, strontium and barium obtained from a lo-liter sample of mineral water are converted into the anhydrous nitrates, and the calcium nitrate is extracted with absolute alcohol-ether mixture. The residue is dissolved in water, the barium separated from the strontium, as BaCr0 4, and the strontium precipitated from the nitrate with sulphuric acid and alcohol.
What to read after An Introductory Course in Quantitative Chemical Analysis With Explanatory Notes?
You can find similar books in the "Read Also" column, or choose other free books by George Mcphail Smith to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Oooo g. ; weight after heating (water driven off), 0. 8522 g. ; weight of silver chloride ob- 170 INTRODUCTORY COURSE IN QUANTITATIVE ANALYSIS tained, i . 1 73 5 g. ; weight of barium sulphate obtained, 0. 9594 g. Calculate : (a) the percentage of each constituent ; (6) the formula of the compound.
41. If two i. Oooo-g. Samples of a substance containing 10. 00% of MgO are weighed out, and the precipitate of MgNH 4 PO 4 . 6 H 2 is in one case contaminated with 0. 0250 g. Of Mg 3 (PO 4 )2, and in... the other case with 0. 0250 g. Of Mg[(NH 4 ) 2 P04]2, what percentages of MgO will be found if the calculations are based upon the assumption that the ignited precipi- tate in each case consists entirely of Mg 2 P2O7?
42. The carbonates of calcium, strontium and barium obtained from a lo-liter sample of mineral water are converted into the anhydrous nitrates, and the calcium nitrate is extracted with absolute alcohol-ether mixture. The residue is dissolved in water, the barium separated from the strontium, as BaCr0 4, and the strontium precipitated from the nitrate with sulphuric acid and alcohol.
What to read after An Introductory Course in Quantitative Chemical Analysis With Explanatory Notes?
You can find similar books in the "Read Also" column, or choose other free books by George Mcphail Smith to read onlineMoreLess
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