Chemistry

Chemistry, 07.07.2019 11:10, kay7060

How do i identify the ions present in k2hpo4?

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Chemistry, 06.08.2019 21:30, davidreed11

Asolution possibly contains k+, pb2+, ag+, fe2+ and/or ni2+. which of the following statements is true about what could be concluded from the fact that the addition of hcl produces a precipitate? ag+ is the only species present. both ag+ and pb2+ are present and no other ions are present. either ag+, pb2+ or both are present. this does not give us any information about the other three ions. only k+, fe2+ or ni2+ could be present in solution.

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Chemistry, 12.09.2019 01:30, nathangirnet

How can 6m nitric acid be used to identify co2 3 ions dissolved in the same solution with so2 4 and po3 4 ions? 2. how can you distinguish between so2 4 and po3 4 if they are present in the same solution? 3. what would you do and how would you know that a precipitate contained either agcl, or agi, or both? 4. why should you test for the presence of no 3 ions in a solution before testing for the presence of cl and i ions in that solution? 5. why should a person not test for the presence of no 3 ions in a solution that he or she plans to subsequently test for the presence of sulfate ions, so2 4 ?

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Chemistry, 10.10.2019 06:00, ballerboles4747

Suppose that a student extracted the ether soution first with koh (excess). in other words, the student skipped the step with the k2hpo4. a. draw the structures of the species that would be present (in significant quantities) in the ether layer. b. draw the structures of the species that would be present (in significant quantities) in the aquous layer. c. would adding k2hpo4 to the organic layer be of any use in an attempt to fix this error and separate and isolate the three compounds? explain d. would adding k2hpo4 to the aqueous layer be of any use? explain. why is it not suprising to find some caffeine in the isolated aspirin and/or acetaminophen? gravity filtration or decanting may be used to separate the solid from the liquid after using na2so4 on the final ether layer. a. which method did you use? b. for that method where was the sodium sulfate after the separation? c. where was the caffeine? d. where did the water go?

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