Solving a chemistry problem
5. During conductometric titration of 50 ml of water with a 0.05 N HCl solution, the following data were obtained:
VHCl, ml 0 0.5 1.5 2.0 2.5 3.0 3.5
R, PTO 47 46 45 44 28.7 20.5 16.0 13.2
Determine the temporary hardness of water (due to the content of calcium and magnesium carbonates).
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