Conductometric titration of 100 ml of acetic acid with 0.5 N NaOH solution yielded the following results:
VNaOH, ml 8.0 9.0 10.0 11.0 12.0 13.0 15.0 17.0
R, Ohm 75.0 68.1 62.3 57.0 53.2 50.8 51.5 52.1
Determine the concentration of acetic acid in g/l.

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