The DO of a water sample used in a steel industry was tested by Winkler’s method. The following titre values were obtained: Titration of 100 ml water added with MnSO4, alkaline KI solution and conc. H2SO4 in prescribed quantities with sodium thiosulphate solution gave three values, 8 ml, 8.2 ml, 8.2 ml. The titration of thio solution used for titration with 20 ml standard K2Cr2O7 (0.01 N) solution resulted in three values, 19.5 ml, 19.8 ml and 19.8 ml. Estimate the amount of DO present in the given water in ppm.
The DO of a water sample used in a steel industry was tested by Winkler’s method. The following titre values were obtained: Titration of 100 ml water added with MnSO4, alkaline KI solution and conc. H2SO4 in prescribed quantities with sodium thiosulphate solution gave three values, 8 ml, 8.2 ml, 8.2 ml. The titration of thio solution used for titration with 20 ml standard K2Cr2O7 (0.01 N) solution resulted in three values, 19.5 ml, 19.8 ml and 19.8 ml. Estimate the amount of DO present in the given water in ppm.
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions
Section4.9: Spectrophotometry
Problem 3.1ACP
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The DO of a water sample used in a steel industry was tested by Winkler’s method. The following titre values were obtained: Titration of 100 ml water added with MnSO4, alkaline KI solution and conc. H2SO4 in prescribed quantities with sodium thiosulphate solution gave three values, 8 ml, 8.2 ml, 8.2 ml. The titration of thio solution used for titration with 20 ml standard K2Cr2O7 (0.01 N) solution resulted in three values, 19.5 ml, 19.8 ml and 19.8 ml. Estimate the amount of DO present in the given water in ppm..
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