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In: Chemistry

Sketch a graph for a titraton of a weak acid(burette) against 25cm^3 of strong base (conical...

Sketch a graph for a titraton of a weak acid(burette) against 25cm^3 of strong base (conical flask). Assume that both have a concentration of 0.5M. Label axis please!

Solutions

Expert Solution

Let the strong base be NaOH

So we have 25 ml of 0.5 M NaOH in conical flask

titration with 0.5 M of CH3COOH (weak acid) in burette

pKa of CH3COOH = 4.75

Let us calculate few data points for graph

CH3COOH (ml)        pH

         0                    13.70

         1                    13.66

         5                    13.52

      12.5                  13.22

        25                     9.08 (equivalence point)

        28                     5.67

        30                     5.45             

        50                     4.75 (half equivalence point)

        75                     4.45

       100                    4.27         

Plot

             


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