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Might be present HgO ZnSO Cds Pb(NO3)2 Na SO Are definitely present Cd(NO₂)2 Are definitely absent reset ? help

Might be present HgO ZnSO Cds Pb(NO3)2 Na SO Are definitely present Cd(NO₂)2 Are definitely absent reset ? help

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter15: Acid–base Equilibria
Section: Chapter Questions
Problem 57P
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Problem 17.78 An unknown solid is entirely soluble in water. On addition of dilute HC1, a precipitate forms. After the precipitate is filtered off, the pH is adjusted to about 1 and H₂S is bubbled in; a precipitate again forms. After filtering off this precipitate, the pH is adjusted to 8 and H₂S is again added; no precipitate forms. No precipitate forms upon addition of (NH4)2HPO4. The remaining solution shows a yellow color in a flame test. Part A Based on these observations, which of the following compounds might be present, which are definitely present, and which are definitely absent. Drag the appropriate items to their respective bins. Might be present Submit HgO My Answers Give Up ZnSO4 CdS Pb(NO3)2 Na₂SO4 Are definitely present Cd(NO3)2 Are definitely absent Ⓒreset ? help
Transcribed Image Text:Problem 17.78 An unknown solid is entirely soluble in water. On addition of dilute HC1, a precipitate forms. After the precipitate is filtered off, the pH is adjusted to about 1 and H₂S is bubbled in; a precipitate again forms. After filtering off this precipitate, the pH is adjusted to 8 and H₂S is again added; no precipitate forms. No precipitate forms upon addition of (NH4)2HPO4. The remaining solution shows a yellow color in a flame test. Part A Based on these observations, which of the following compounds might be present, which are definitely present, and which are definitely absent. Drag the appropriate items to their respective bins. Might be present Submit HgO My Answers Give Up ZnSO4 CdS Pb(NO3)2 Na₂SO4 Are definitely present Cd(NO3)2 Are definitely absent Ⓒreset ? help
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