A water sample was tested for water hardness. A 50.00 mL sample, prepared and buffered
to pH 10, required 23.55 mL of 0.0250 M EDTA. A second 50.00 mL aliquot, prepared with
NaOH, was titrated with 14.53 mL of the same EDTA solution.
a. Calculate the total hardness of the water sample, express in ppm CaCO3
b. Calculate the concentration of CaCO3 in the sample in ppm
c. Calculate the concentration of MgCO3 in the sample in ppm
Calculate ppm in standard solution:
Now Calculate concentration EDTA in mg per mL EDTA:
Now calculate the mg in the water sample:
Now calculate ppm in the water sample:
We have to use experiment data as it is
There is no proof of those experimental values.
Dear GrandMa, You're welcome. We are glad to be helpful. If you liked our service please press like-button beside answer field. Thank you!