Chem & Physics Quiz
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A lab compares two buffers at the same pH (both adjusted to pH 6.0): Buffer 1 contains 0.010 M total of H2PO4−/HPO42− (pKa2=7.21), and Buffer 2 contains 0.100 M total of the same conjugate pair at the same ratio. Both are challenged with the same small amount of HCl. Buffer capacity increases with total buffer concentration at fixed ratio. Which outcome is most consistent with these principles?
(Assume temperature constant and negligible volume changes.)
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