A 30.0 mL sample of 0.135 M aqueous benzoic acid is titrated with 0.115 M aqueous potassium hydroxide. (a) What is the initial pH of the benzoic acid solution?   (b) What is the pH after the addition of 5.00 mL potassium hydroxide solution?   (c) What volume of potassium hydroxide solution is required to reach halfway to the equivalence point?

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  1. A 30.0 mL sample of 0.135 M aqueous benzoic acid is titrated with 0.115 M aqueous potassium hydroxide.

(a) What is the initial pH of the benzoic acid solution?  

(b) What is the pH after the addition of 5.00 mL potassium hydroxide solution?  

(c) What volume of potassium hydroxide solution is required to reach halfway to the equivalence point? (d) Calculate the pH at the point halfway to the equivalence point.  

(e) What volume of potassium hydroxide solution is required to reach the equivalence point? (see [c])  

(f) Calculate the pH at the equivalence point.  

(g) Calculate the pH of the solution when an additional 5.0 mL of potassium hydroxide has been added (5.00 mL in addition to the amount required to reach the equivalence point). 

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