Homework Answers
| ion present | observation |
|---|---|
| F- | no precipitate |
| Cl- | white precipitate |
| Br- | very pale cream precipitate |
| I- | very pale yellow precipitate |
Out of given choices only sulfide (S2-) can give such precipitates, although the precipitate color depends on impurities also. Acetate, sulfate and fluoride anions will not give grey/black precipitates.
Answer: d) S2-
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A student is given a sample in lab that contains one of the ions listed below....
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an introduction to chemistry lab
Pre-Lab Study Questions 1. How can the presence of an ion in a solution be detected? ไป dedeed by a lame the ions undec gp color changes By com paring knoum olion o a unKnown vo Can co ure he color ehanges in he lame If a reaction produces an insoluble salt, what will you notice happening in the test tube? 2. So,It wany saヅdissolved and tt a, precipitate oat, solut kan bep eadind on...
1. If your original unknown is colorless, what ions are absent
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2. If you get no precipitate with just the 6 M NH3 in step B,
what ions are absent from your unknown?
pls help are my answers correct ty
17 Page 4 Aperiment 24. Qualitative Analysis Group III-NI, Mn, Fe, Al, Cr, Zn 1. PROCEDURES A. Observations of Samples. Obtain an unknown and record code. Observe color of unknown solution Common color correlations are: dark blue...
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i need help with this lab please. can i get someone to answer
the entire thing. thank you
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question#1
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7. Binding sites on the ion exchange resin are saturated
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