17. With high-frequency titration of 25.0 ml of a mixture of HCl and CH3COOH with a 0.1050M NaOH solution, the following was obtained:
V(NaOH), ml 2.0 4.0 5.0 6.0 7.0 8.0 9.0 11.0 13.0 15.0 17.0 18.0 19.0
instrument readings 62 51 37 32 23 21 23 26 31 37 44 56 68
Determine the concentration of acids, g/l.

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