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xperiments with cells or other biological samples done in vitro are conducted at a pH of 7.4. Jsually a phosphate buffer system is used: H2PO4HPO42+H+pKA=7.2

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xperiments with cells or other biological samples done in vitro are conducted at a pH of 7.4. Jsually a phosphate buffer system is used: H2PO4HPO42+H+pKA=7.2 What is the ratio of HPO42 to H2PO4 - ions? What mass of NaH2PO4 must be added to 500mL of 0.1MNa2HPO4

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