mixture of solid chloride salts known to contain only some of the cations of Experiment 12 is partially dissolved in cold water to give a white precipitate and a colorless solution. The solution is decanted from the precipitate. Addition of 5 M NH4Cl(aq) solution and enough 6 M NH3(aq) to make the solution basic to litmus resulted in no change in the solution. The addition of (NH4)2C2O4(aq) resulted in

Chemistry: The Molecular Science
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ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter12: Chemical Equilibrium
Section12.3: Determining Equilibrium Constants
Problem 12.3PSP
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A mixture of solid chloride salts known to contain only some of the cations of Experiment 12 is partially dissolved in cold water to give a white precipitate and a colorless solution. The solution is decanted from the precipitate. Addition of 5 M NH4Cl(aq) solution and enough 6 M NH3(aq) to make the solution basic to litmus resulted in no change in the solution. The addition of (NH4)2C2O4(aq) resulted in the formation of a white a precipitate. Using this data, indicate whether the listed cations are most likely present, most likely absent or unable to be determined. Ag+, Fe3+, Al3+, Ca2+, Cr3+

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