Chemical Reagents Their Purity And Tests Authorized Translation of Prfung De
Chemical Reagents Their Purity And Tests Authorized Translation of Prfung De
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25 per cent. ) Carbonates. 5 gm. Of lead oxide, when heated even to the melting-point, should not lose more than 0. 005 gm. In weight. (Indicating not more than 0. 1 per cent CO 2 . ) Copper, Iron, and Aluminum. Dissolve 2 gm. Of lead oxide in 10 c. C. Of nitric acid and 5 c. C. Of water, add to the clear solution 3 c. C. Of concentrated sulphuric acid, and filter off the resulting precipitate. On adding to the filtrate an excess of ammonia water, the liquid should not acquire a blue color, nor... should a precipitate form. (Indicating less than 0. 001 per cent Cu, 0. 002 per cent Fe, or 0. 1 per cent Al. ) Nitrates and Nitrites. Mix 1 gm. Of lead oxide with 5 c. C. Of water, and dissolve with the aid of 5 c. C. Of diluted acetic acid. The blue color produced by adding 0. 2 c. C. Of 1 : 1000 indigo solution should not disappear on the addition of 10 c. C. Ot concentrated sulphuric acid and subsequent agitation. (Indicating less than 0. 016 per cent as N 2 O 5 . ) Chlorides. The solution of 1 gm.
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To quickly assess the difficulty of the text, read a short excerpt:
25 per cent. ) Carbonates. 5 gm. Of lead oxide, when heated even to the melting-point, should not lose more than 0. 005 gm. In weight. (Indicating not more than 0. 1 per cent CO 2 . ) Copper, Iron, and Aluminum. Dissolve 2 gm. Of lead oxide in 10 c. C. Of nitric acid and 5 c. C. Of water, add to the clear solution 3 c. C. Of concentrated sulphuric acid, and filter off the resulting precipitate. On adding to the filtrate an excess of ammonia water, the liquid should not acquire a blue color, nor... should a precipitate form. (Indicating less than 0. 001 per cent Cu, 0. 002 per cent Fe, or 0. 1 per cent Al. ) Nitrates and Nitrites. Mix 1 gm. Of lead oxide with 5 c. C. Of water, and dissolve with the aid of 5 c. C. Of diluted acetic acid. The blue color produced by adding 0. 2 c. C. Of 1 : 1000 indigo solution should not disappear on the addition of 10 c. C. Ot concentrated sulphuric acid and subsequent agitation. (Indicating less than 0. 016 per cent as N 2 O 5 . ) Chlorides. The solution of 1 gm.
What to read after Chemical Reagents Their Purity And Tests Authorized Translation of Prfung De?
You can find similar books in the "Read Also" column, or choose other free books by Zed20translation20of20prc3bcfung20der20chem to read onlineMoreLess
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