42. With high-frequency titration of 200.0 ml of a mixture of NH3 and KOH with 0.2000 M hydrochloric acid, the following was obtained:
V(HCl).ml .............. 0.5 1.0 1.5 2.0 2.5 3.0 4.0 5.0 6.0 7.0 7.5 8.0 8.5
Meter Reading.... 48 39 29 23 18 19 20 22 23 25 30 44 57
Build a titration curve and determine the concentration of each of the components g/l.

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