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what is the pH of a solution that mixes 30.00 mL of 0.010 M Ch3oh with...

what is the pH of a solution that mixes 30.00 mL of 0.010 M Ch3oh with 30.00 mL 0.00750 M Nach3co2?

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Expert Solution

We know that

                   

Since the volume of the both acid and salt are the same [CH3COOH] = 0.010 M

                                                                                  [CH3COONa] = 0.00750 M

Ionization constant for acetic acid , Ka = 1.7510-5

pKa = - log Ka

       = - log (1.7510-5)

      = 5 - log 1.75

      = 4.76

Substitute he above values in the first eqaution we have

queen_honey_blossom answered 1 year ago
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