Chemistry

Problem

A 500 mL buffer solution is 0.40 M in HCOOH and 0.20 M in NaHCOO. Which single addition would most likely exhaust the buffer toward pH increase? a) Adding

25\,\text{mL}

0.10\,\text{M}\;\text{NaOH(aq)}

b) Adding

5\,\text{mL}

1.0\,\text{M}\;\text{NaOH(aq)}

c) Adding

50\,\text{mL}

0.10\,\text{M}\;\text{HCl(aq)}

d) Adding

5\,\text{mL}

1.0\,\text{M}\;\text{HCl(aq)}

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