Which of the following is true of a buffer prepared w/ equal concentrations of an acid and its conjugate base?

pH = pKa
the buffer capacity depends on the concentration of the acid and base
both (a) and (b)
neither (a) nor (b)

Answer:
pH = pKa
We use the equation :
pH = pKa + log [ conjugate base] / [ acid]
If we have the same concentration [ conjugate base] / [ acid] =1
log 1 = 0
pH = pKa

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