99. Решение задачки по химии №009 948

5. Derive an expression for emf. element
Pt I H2 (gas, 1 atm) I KH2PO4 (m1), Na2HP04 (m2) II NaX (m3) I AgX (solid) I Ag.
Substitute the appropriate expression for the equilibrium constant instead of the second stage of the dissociation of phosphoric acid and show how this dissociation constant can be calculated from the results of measuring e. d.s. at a constant temperature.

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