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Which ions present in the example

Which ions present in the example

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Which ions present in the example?
Ba2+ Ca2+ O Mg2+ ONH4
Transcribed Image Text:Ba2+ Ca2+ O Mg2+ ONH4
to answer the following question. An unknown sample is tested with ammonium sulfate, (NH4),SO. There was no precipitate, so the sample is tested with ammonium oxalate, (NH4)2C204. A white precipitate formed. The test tube was centrifuged and the clear liquid was decanted to another test tube. To the clear liquid sodium monohydrogen phosphate, Na,HPO4, and a few drops of sodium hydroxide, NaOH, were added. A white precipitate was formed, which was again centrifuged and decanted. The resulting solid was dissolved with hydrochloric acid, HCI, a magnesium indicator was added, as well as a few drops of sodium hydroxide. The resulting solution was centrifuged, and a blue puddle was pulled to the bottom of the test tube. A fresh sample of the unknown was also tested with sodium hydroxide, the piece of litmus paper stayed pink and did not change color. Which ions are present in the sample? Check all that apply. O Ba2+ O Ca2+ O Mg2+ ONH,+
Transcribed Image Text:to answer the following question. An unknown sample is tested with ammonium sulfate, (NH4),SO. There was no precipitate, so the sample is tested with ammonium oxalate, (NH4)2C204. A white precipitate formed. The test tube was centrifuged and the clear liquid was decanted to another test tube. To the clear liquid sodium monohydrogen phosphate, Na,HPO4, and a few drops of sodium hydroxide, NaOH, were added. A white precipitate was formed, which was again centrifuged and decanted. The resulting solid was dissolved with hydrochloric acid, HCI, a magnesium indicator was added, as well as a few drops of sodium hydroxide. The resulting solution was centrifuged, and a blue puddle was pulled to the bottom of the test tube. A fresh sample of the unknown was also tested with sodium hydroxide, the piece of litmus paper stayed pink and did not change color. Which ions are present in the sample? Check all that apply. O Ba2+ O Ca2+ O Mg2+ ONH,+
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