## Question

###### A chemistry graduate student is given 125.mL of a 1.20M propanoic acid HC2H5CO2 solution. Propanoic acid...

A chemistry graduate student is given 125.mL of a 1.20M propanoic acid HC2H5CO2 solution. Propanoic acid is a weak acid with =Ka×1.310−5 What mass of KC2H5CO2 should the student dissolves in the HC2H5CO2 solution to turn it into a buffer with pH =5.13

Be sure your answer has a unit symbol, and round it to 2 significant digits.

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## Answers

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