The Telluride ion was determined by indirect titration with EDTA. To a solution containing50.00 mL of 0.08664M Zn(CIOA)2 plus 15 mL of 1 M acetate buffer (pH 4.5) were added 50.00mL of unknown telluride solution with vigorous stirring. The ZnTe precipitate was filteredand washed with hot water. Then NH3 was added to the filtrate (which contained excess Zn2+)until the blue colour of Zn(NH3)42+ was observed. Titration of the filtrate with 0.07854 M EDTArequired 24.22 mL to reach the murexide end point.Calculate the molarity of telluride ion in the unknown.

Given Concentration of Zn(ClO4)2= 0.08664 M Given Telluride Solutions = 50 ml We have to calculate…

The Telluride ion was determined by indirect titration with EDTA. To a solution conta 50.00 mL of 0.08664M Zn(CIO4)2 plus 15 mL of 1 M acetate buffer (pH 4.5) were added mL of unknown telluride solution with vigorous stirring. The ZnTe precipitate was fi and washed with hot water. Then NH3 was added to the filtrate (which contained excess until the blue colour of Zn(NH3)42+ was observed. Titration of the filtrate with 0.07854 M I required 24.22 mL to reach the murexide end point. Calculate the molarity of telluride jon in the unknown

The Telluride ion was determined by indirect titration with EDTA. To a solution conta 50.00 mL of 0.08664M Zn(CIO4)2 plus 15 mL of 1 M acetate buffer (pH 4.5) were added mL of unknown telluride solution with vigorous stirring. The ZnTe precipitate was fi and washed with hot water. Then NH3 was added to the filtrate (which contained excess until the blue colour of Zn(NH3)42+ was observed. Titration of the filtrate with 0.07854 M I required 24.22 mL to reach the murexide end point. Calculate the molarity of telluride jon in the unknown

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter17: Complexation And Precipitation Reactions And Titrations

Section: Chapter Questions

Problem 17.35QAP

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For complexometric titration of Ca (II) ions in the shell of an egg sample weighing 59,427 g, the necessary processes were applied to the egg shells and a sample of 100 mL was prepared. From the prepared sample, 1 mL was taken and diluted to 100 mL, the pH was adjusted, and two drops of EBT indicator were dripped on it. The prepared solution was titrated with 27.4 mL of EDTA solution set at 0.0097 M. Calculate the amount of calcium in the sample in CaCO3%. (Ca = 40g / mol, CaCO3= 100g / mol)
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