2. When titrating 200 ml of a mixture of caustic potassium and ammonia with 0.2 N hydrochloric acid, the following galvanometer readings were obtained:

V 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
Galvanometer readings 42 39 29 23 21 14 20 22 23 25 30 44 57

Construct a titration curve and determine the concentration of KOH and NH4OH. Determine how much solution of caustic potassium and ammonia should be taken to prepare 200 ml of the indicated solution?

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