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Consider a buffer solution that contains 0.25 M C6H4(CO2H)(CO2K) and 0.15 M C6H4(CO2K)2. pKa(C6H4(CO2H)CO2-)=5.41. a) Calculate...

Consider a buffer solution that contains 0.25 M C6H4(CO2H)(CO2K) and 0.15 M C6H4(CO2K)2. pKa(C6H4(CO2H)CO2-)=5.41.

a) Calculate its pH & Calculate the change in pH if 0.140 g of solid NaOH is added to 190 mL of this solution.

b) If the acceptable buffer range of the solution is ±0.10 pH units, calculate how many moles of H3O+ can be neutralized by 250 mL of the initial buffer.

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