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  • pH of mixture of 500 ml 0.1 M and 250 ml 0.1 M NaOH solution is (given pKa of acetic acid is 4.74)</

pH of mixture of 500 ml 0.1 M CH_3COOH and 250 ml 0.1 M NaOH solution is (given pKa of acetic acid is 4.74)

Option: 1

5.74


Option: 2

 5.04


Option: 3

 4.74


Option: 4

11.74


Answers (1)

best_answer

Answer (3) CH_3COOH+NaOH\rightleftharpoons CH_3COONa+H_2O

                     t=0        50meg       25meg                     0                           0

                    at eq      25meq         0                            25meq                  0

\therefore pH=pka+\log\frac{salt}{acid}\Rightarrow pH=pka=4.74

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Gaurav

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