Q3. There is a mixture including some cations and it is aimed to separate and analyze some of the metal cations consists of selectively precipitating within a time period. Base on your knowledge gained in "Qualitative Analysis of Cations" experiment, please fill in the blanks. a) The analysis started with. solution. 4 drops of . 1 drop of acetic acid (CH;COOH) and 3 drops of K:CrO, were added into test tube and were mixed slowly. . precipitated in a yellow color . . K;CrO, + 2CH,COOH + PbCrO4, + 2CH,COOKa)+ 2HNOag) As the next step, 8 drops of.. test tube was shaken and. and 2 drops of hydrogen chloride (HCI) were added and the precipitated in a white color. Pb(NO.)) + 2HCla) + 2HNO b) Firstly 4 drops of . and 4 drops of ammonium oxalate were added into the test tube and the tube was shaken. A white . precipitate was observed. This showed that the existence of . CaClang + (NH.):C204 (m) 2(NH.)Chag +. c) In the experiment, 5 drops of ... solution, 5 drops of ammonia (NH) and 10 drops of sodium hydrogen phosphate (Na;HPO,) were added to the test tube and tube was shaken. : + NHag) + Na:HPO4tag)- MGNH.PO4s + 2NACI(aq) precipitated in a white color. This shows us the existence of ..

Q3. There is a mixture including some cations and it is aimed to separate and analyze some of the metal cations consists of selectively precipitating within a time period. Base on your knowledge gained in "Qualitative Analysis of Cations" experiment, please fill in the blanks. a) The analysis started with. solution. 4 drops of . 1 drop of acetic acid (CH;COOH) and 3 drops of K:CrO, were added into test tube and were mixed slowly. . precipitated in a yellow color . . K;CrO, + 2CH,COOH + PbCrO4, + 2CH,COOKa)+ 2HNOag) As the next step, 8 drops of.. test tube was shaken and. and 2 drops of hydrogen chloride (HCI) were added and the precipitated in a white color. Pb(NO.)) + 2HCla) + 2HNO b) Firstly 4 drops of . and 4 drops of ammonium oxalate were added into the test tube and the tube was shaken. A white . precipitate was observed. This showed that the existence of . CaClang + (NH.):C204 (m) 2(NH.)Chag +. c) In the experiment, 5 drops of ... solution, 5 drops of ammonia (NH) and 10 drops of sodium hydrogen phosphate (Na;HPO,) were added to the test tube and tube was shaken. : + NHag) + Na:HPO4tag)- MGNH.PO4s + 2NACI(aq) precipitated in a white color. This shows us the existence of ..

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 28QAP: The procedures and principles of qualitative analysis are coy cred in many introductory chemistry...

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A sample of solid calcium hydroxide, Ca(OH)2, is allowed to stand in water until a saturated solution is formed. A titration of 75.00 mL of this solution with 5.00102M HCl requires 36.6 mL of the acid to reach the end point. Ca(OH)2(aq)+2HCl(aq)CaCl2(aq)+2H2O(l) What is the molarity?
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The procedures and principles of qualitative analysis are coy cred in many introductory chemistry laboratory courses. In qualitative analysis, students learn to analyze mixtures of the common positive and negative ions, separating and confirming the presence of the particular ions in the mixture. One of the first steps in such an analysis is to treat the mixture with hydrochloric acid, which precipitates and removes silver ion, lead(II) ion, and mercury(I) ion from the aqueous mixture as the insoluble chloride salts. Write balanced net ionic equations for the precipitation reactions of these three cations with chloride ion.
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