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How do you determine the mass needed to make a certain molarity and certain pH solution?...

How do you determine the mass needed to make a certain molarity and certain pH solution? For example, if I need to make 300 mL of 0.05 M Tris Base and 0.05 M NaCL (pH 8.2) from 2M of both, how do I do the math for that and get the grams needed of each?

Also how do you use the Henderson-Haseelbach equation to determine how much .1 M KH2PO4 to add to 100 mL of of K2HPO4 to give a pH of 7.0 (pKa = 6.86).

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queen_honey_blossom answered 5 months ago
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