0.50 M solutions of each weak acid in the table are available. Choose an acid solution and determine what volume, in mL, of a 1.00 M NaOH solution should be added to 1.00 L of the acid solution to create a buffer with pH = 6.88.   acid/base pairs to use: Ka pKa HCO2H/NaHCO2 1.8×10-4 3.74 H2CO3/NaHCO3 4.2×10-7 6.38 HBO3/NaH2BO3 7.3×10-10 9.14 NaHCO3/Na2CO3 4.8×10-11 10.32   HCO2H/NaHCO2 H2CO3/NaHCO3 H3BO3/NaH2BO3 NaHCO3/Na2CO3  ---------mL NaOH

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0.50 M solutions of each weak acid in the table are available. Choose an acid solution and determine what volume, in mL, of a 1.00 M NaOH solution should be added to 1.00 L of the acid solution to create a buffer with pH = 6.88.

 

acid/base pairs to use: Ka pKa
HCO2H/NaHCO2 1.8×10-4 3.74
H2CO3/NaHCO3 4.2×10-7 6.38
HBO3/NaH2BO3 7.3×10-10 9.14
NaHCO3/Na2CO3 4.8×10-11 10.32

 

HCO2H/NaHCO2
H2CO3/NaHCO3
H3BO3/NaH2BO3
NaHCO3/Na2CO3

 ---------mL NaOH

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