Answer:
Concentration (C) = 0.076 M
Temperature (T)= 250C
PH = 3
PH = 1/2Pka -1/2 logC
3 = 1/2 Pka - 1/2 log [0.076]
3 = 1/2Pka - 1/2 x -1.119
3 = 1/2 Pka - 0.559
1/2 Pka = 3.559
Pka = 3.559 x 2
Pka = 7.118
To find the pKa of x-281, you prepare a 0.076M test solution of X-281 at 25.0...
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