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1. KH2PO4 is a regent widely used in lab and industry for pH adjust. For H3PO4,pkal=2.1,pKa=7.1,pKa=12.3. Consider a solution made by adding KH2PO4 to water

1. KH2PO4 is a regent widely used in lab and industry for pH adjust. For H3PO4,pkal=2.1,pKa=7.1,pKa=12.3. Consider a solution made by adding KH2PO4 to water until pH of the solution is 8 . Please calculate the concentration of KH2PO4 added

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