1. Which of the following may cause an increase in the calculated percent recovery of the recrystallized benzoic acid? a.Adding too much solvent in the receiving flask during hot filtration b.Using cold water in rinsing the residue from the flask during hot filtration c.Using fluted filter paper during hot filtration d.Not adding animal charcoal to the solution 2. Which set of reagents can confirm that sulfate ions are present in two unkown solutions? a.1.0 M NaOH and excess NH3 b.0.1 M Ba(NO3)2 and 0.01 M KMnO4 c.1.0 M NaOH and 0.1 M K2Zn3[Fe(CN)6]2 d.0.1 M Ba(NO3)2 and 1.0 M CH3COOH

1. Which of the following may cause an increase in the calculated percent recovery of the recrystallized benzoic acid? a.Adding too much solvent in the receiving flask during hot filtration b.Using cold water in rinsing the residue from the flask during hot filtration c.Using fluted filter paper during hot filtration d.Not adding animal charcoal to the solution 2. Which set of reagents can confirm that sulfate ions are present in two unkown solutions? a.1.0 M NaOH and excess NH3 b.0.1 M Ba(NO3)2 and 0.01 M KMnO4 c.1.0 M NaOH and 0.1 M K2Zn3[Fe(CN)6]2 d.0.1 M Ba(NO3)2 and 1.0 M CH3COOH

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter10: Potentiometry And Redox Titrations

Section: Chapter Questions

Problem 8P

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Why is the titration done with vigorous swirling?
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1. Which among these is/are desirable properties for the type of precipitate required in gravimetric analysis? I. large particles III. known composition A. I only II. reactive with atmospheric constituents IV. small particles C. I & III В. I & II D. III & IV Е. I, П, I
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