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prepare .1M Sodium phospahte buffer, pH 6.8. you need 500ml. NaH2PO4-H20= 137.99g/mol Na2HPO4-7H20= 268.08g/mol

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Chemistry

prepare .1M Sodium phospahte buffer, pH 6.8. you need 500ml.

NaH2PO4-H20= 137.99g/mol

Na2HPO4-7H20= 268.08g/mol

Answer & Explanation Solved by verified expert
4.5 Ratings (983 Votes)
We can create phosphate buffer by adding NaH2PO4H2O and Na2HPO47H2O The buffer action is due to inter conversion of the acidH2PO4 to the salt HPO42 H2PO4aq H2Ol HPO42 aq H3O pKa 721 The required pH 68 Applying Hendersen    See Answer
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