# #water-treatment

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> #water-treatment

# Questions

Apr 21

#### From the detamination of hardness of water through complexometric titration, the following data are obtained: Average volume of EDTA used= 8.47mls when water sample used, ?

From the detamination of hardness of water through complexometric titration, the following data are obtained: Average volume of EDTA used= 8.47mls when water sample used, Average volume of EDTA=0.17mls when distilled water was used (blank) Mean corrected titration volume of EDTA required by water sample was 8.30mls( when Murexide indicator was used) Calculate the concentration of calcium in mg/1 as CaCO3 Calculate the concentration of calcium in mg/1 as CaCO3?

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