A solution contains some or all of the ions Cu²+, A13+, K+, Ca?+, Ba?+, Pb²+, and NH4*. The following tests were performed, in order, on the solution.1. Addition of 6 M HCl produced no reaction.2. Addition of H2S with 0.2 M HCl produced a black solid.3. Addition of (NH4)2S produced a white solid.4. Addition of (NH4)2 HPO4 in NH3 produced no reaction.5. The final supernatant when heated produced a purple flame.Identify which of these ions were present in the solution, which were absent, and for which ones no conclusions can be drawn.Drag the appropriate items to their respective bins.• View Available Hint(s)ResetHelpA13+Cu?+Ca2+Pb²+NH4+Ba2+K+PresentAbsentInconclusive

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Answered: A solution contains some or all of the…

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter7: Reactions In Aqueous Solutions

Section: Chapter Questions

Problem 74AP

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You are given four different aqueous solutions and told that they each contain NaOH, Na2CO3, NaHCO3, or a mixture of these solutes. You do some experiments and gather these data about the samples. Sample A: Phenolphthalein is colorless in the solution. Sample B: The sample was titrated with HCl until the pink color of phenolphthalein disappeared, then methyl orange was added. The solution became pink. Methyl orange changes color from pH 3.01 (red) to pH 4.4 (orange). Sample C: Equal volumes of the sample were titrated with standardized acid. Using phenolphthalein as an indicator required 15.26 mL of standardized acid to change the phenolphthalein color. The other sample required 17.90 mL for a color change using methyl orange as the indicator. Sample D: Two equal volumes of the sample were titrated with standardized HCl. Using phenolphthalein as the indicator, it took 15.00 mL of acid to reach the equivalence point; using methyl orange as the indicator required 30.00 mL HCl to achieve neutralization. Identify the solute in each of the solutions.
What mass of solid AgBr is produced when 100.0 mL of 0.150 M AgNO3 is added to 20.0 mL of 1.00 M NaBr?
Describe how you could separate the following mixture of metal ions: Na+, Hg2+, and Ca2+.
What mass of solid aluminum hydroxide can be produced when 50.0 mL of 0.200 M Al(NO3)3 is added to 200.0 mL of 0.100 M KOH?
Phosphate buffers are important in regulating the pH of intracellular fluids. If the concentration ratio of H2PO4/HPO42 in a sample of intracellular fluid is 1.1: 1, what is the pH of this sample of intracellular fluid? H2PO4(aq)HPO42(aq)+H+(aq)Ka=6.2108
A solution contains either Cr3+ or Ni2+ ion. Describe a reaction with a single reagent that will identify which ion is present.
1. A silver nitrate solution contains 14.77 g of primary standard AgNO3 in 1.00 L. What volume of this solution will be needed to react with a) 0.2631 g of NaCl? b) 0.1799 g of Na CrO4? c) 64.13 mg of NazAsO4?
Part A - Solution 1 After being given a solution containing a set of unknown ions, you perform the following sequence of tests to determine the identity of the cations in solution: 1. A flame test produces no color 2. You take a small portion of the solution and add NaOH. A vapor is produced that turns red litmus blue. 3. You add HCI to solution, which results in the formation of a white precipitate. The supernatant is separated and used for the remainder of the tests. 4. The addition of buffered NH4*/NH3 to a portion of the supernatant from step 3 does not produce a precipitate. 5. The addition of ammonium oxalate to a portion of the superntant from step 3 does not produce a precipitate 6. The addition of a strong base to a portion of the supernatant from step 3 generates a precipitate. 7. The supernatant from step 6 is separated from the precipitate. The addition of HCI and K4Fe(CN)6 to the solution produces no reaction. Based on these tests, identify which of the following ions must…
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You have a solution that either contains Pb(NO3)2 or KNO3. You add a solution of NaCl and observe no change in the solution. Which compound did the original solution contain? Explain your answer.
a 12.5 mL sample of 0.25 M H2SO4 solution is completely neutralized by 0.150 M KOH solution. Calculate the volume of KOH solution used in this neutralization reaction
Predict the precipitate produced by mixing Al(NO3)3 solution with a NaOH solution. Write the net ionic equation for the reaction.

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