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# A solution of 0.0480 M HCl is used to titrate 27.0 mL of an ammonia solution...

## Question

###### A solution of 0.0480 M HCl is used to titrate 27.0 mL of an ammonia solution...

A solution of 0.0480 M HCl is used to titrate 27.0 mL of an ammonia solution of unknown concentration. The equivalence point is reached when 15.5 mL HCl solution have been added. (Assume Kw = 1.01× 10-14.) (a) What was the original pH of the ammonia solution? 匹の10.85 (b) What is the pH at the equivalence point? の5.50 (c) Draw a titration curve for this titration. ( r curve should be quantitative; calculate the pH at different points to construct an accurate curve, not just a generic sketch.) pH 30 25 20 15 pH 12 30 12 6 Volume HCl added (mL) 20 25 15 Volume HCl added (mL) 10 pH 12 12 10 20 25 30 15 Volume HCl added (mL) 15 20 25 30 Volume HCl added (mL)

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