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8) VOHLARD method for determination of chloride ions in the solution is an example of a) acid-base titration. b) back titration. c) redox titration. d) complexation titration

8) VOHLARD method for determination of chloride ions in the solution is an example of a) acid-base titration. b) back titration. c) redox titration. d) complexation titration

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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1) The coefficient of variation CV% of the data set shown below is 19.4, 195, 196, 19.8, 20.1. 20.3 b) 0.790 a) 0.125 c) 0.018 % 2) The error that can be corrected by calibration: a) systematic error b) gross error c) random d) rando error 3) One of the following indicators can be used to determine the end point of the second first proton in H.PO.: a) Eriochrome Black T b) Phenolphthalein c) Methyl orange d) Chromate ion 4) Ag+ Ch AgCl. This is an example of a) acid-base titration. b) precipitation titration. c) redox titration. d) complexation titration 5) Ag+ (SCN) alacid-base titration. b) Volhard method. d) 0.354 AgSCN) This is an example of c) Fajan method. d) Moher method. 6) The indicator that used in Fjan method is a) dichlorofluorescein b) murxide c) ferric ions (Fe) d) potassium chromate 7) the indicator that used in moher method MOHR method is a) Eriochrome Black T b) murxide c) ferric ions(Fe) d) potassium chromate 8) VOHLARD method for determination of chloride ions in the solution is an example of a) acid-base titration. b) back titration. c) redox titration. d) complexation titration 9) The color of Eriochrome Black T changed (from to) in comlexometric titration of EDTA slat mixture of Ca² and Mg 2+ a) green to yellow b) blue to pink d) pink to colorless c) wine red to bluc 10) Which of these statements is not TRUE? a-Phenolephtalene indicator pink in basic media b-Methyl orange used to identify the first end c-The primary standard for EDTA is ZnSO4 solution d-EDTA considered as triprotic acid at pH=12 point of H₂PO4.
Transcribed Image Text:1) The coefficient of variation CV% of the data set shown below is 19.4, 195, 196, 19.8, 20.1. 20.3 b) 0.790 a) 0.125 c) 0.018 % 2) The error that can be corrected by calibration: a) systematic error b) gross error c) random d) rando error 3) One of the following indicators can be used to determine the end point of the second first proton in H.PO.: a) Eriochrome Black T b) Phenolphthalein c) Methyl orange d) Chromate ion 4) Ag+ Ch AgCl. This is an example of a) acid-base titration. b) precipitation titration. c) redox titration. d) complexation titration 5) Ag+ (SCN) alacid-base titration. b) Volhard method. d) 0.354 AgSCN) This is an example of c) Fajan method. d) Moher method. 6) The indicator that used in Fjan method is a) dichlorofluorescein b) murxide c) ferric ions (Fe) d) potassium chromate 7) the indicator that used in moher method MOHR method is a) Eriochrome Black T b) murxide c) ferric ions(Fe) d) potassium chromate 8) VOHLARD method for determination of chloride ions in the solution is an example of a) acid-base titration. b) back titration. c) redox titration. d) complexation titration 9) The color of Eriochrome Black T changed (from to) in comlexometric titration of EDTA slat mixture of Ca² and Mg 2+ a) green to yellow b) blue to pink d) pink to colorless c) wine red to bluc 10) Which of these statements is not TRUE? a-Phenolephtalene indicator pink in basic media b-Methyl orange used to identify the first end c-The primary standard for EDTA is ZnSO4 solution d-EDTA considered as triprotic acid at pH=12 point of H₂PO4.
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