Silver-ammine two stage

Tn detennine the equilibrium concentration quotients in aqueous NHjNOj solution for the reactions 

s J5 and of the following cells were measured at 30 C by J. Bjerrum (Metal ammine formation in aqueous solution, Haase, Copenhagen, 1941, p. 132) 

The results obtained for 7 cells are given in table 1 where h denotes the stoicheiometiic concentration of ammonia in cell / . 

Owing to the large constant excess of ammonium nitrate in the solutions used, the activity coefELcients and junction potentials are 

Thus from the known value of [NHa] we can in each experiment calculate the value of [NHg], which we shall denote by c. 

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