Phosphoric acid is a triprotic acid with the following pK, values pK -2.148 pK 7.198 pK-12375 You wish to prepare 1.000 L of a 0.0300 M phosphate buffer at pH 7.560. To do this, you choose to mix the two salt forms involved in the second ionization, NaH2PO4 and Na2HPO4, in a 1.000 L volumetric flask and add water to the mark. What mass of each salt will you add to the mixture? Number Number Nah, Po,-D gl mass Na,HPO,-IL ina ss

Question

How do I use the numbers given to find the masses in grams?

Phosphoric acid is a triprotic acid with the following pK, values
pK -2.148 pK 7.198 pK-12375
You wish to prepare 1.000 L of a 0.0300 M phosphate buffer at pH 7.560. To do this, you choose to
mix the two salt forms involved in the second ionization, NaH2PO4 and Na2HPO4, in a 1.000 L
volumetric flask and add water to the mark. What mass of each salt will you add to the mixture?
Number
Number
Nah, Po,-D
gl
mass Na,HPO,-IL
ina ss
Expand
Transcribed Image Text

Phosphoric acid is a triprotic acid with the following pK, values pK -2.148 pK 7.198 pK-12375 You wish to prepare 1.000 L of a 0.0300 M phosphate buffer at pH 7.560. To do this, you choose to mix the two salt forms involved in the second ionization, NaH2PO4 and Na2HPO4, in a 1.000 L volumetric flask and add water to the mark. What mass of each salt will you add to the mixture? Number Number Nah, Po,-D gl mass Na,HPO,-IL ina ss

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