1.

The addition of four amine groups to a metal ion (X^(2+)) shows a stability constants of 2 * 10^4, 1.5 * 10^3, 1.2 * 10^2 and 1.4 * 10^1 respectively. Then, the overall complex dissociation equlolibrium constant for [X(NH_3)_4]^(2+) ion is

Answer»

5.04 * 10^(-10)`
19.8 * 10^(-10)`
1.98 * 10^(-11)`
50.4 * 10^(-9)`

ANSWER :C


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