Question

In: Chemistry

Using the ionization constants found at https://sites.google.com/site/chempendix/ionization, calculate the overall equilibrium constant, Koverall, for the following...

Using the ionization constants found at https://sites.google.com/site/chempendix/ionization, calculate the overall equilibrium constant, Koverall, for the following reaction:

HCN(aq)+SO3^2-(aq) --><-- CN^-(aq)+HSO3^-(aq)

Solutions

Expert Solution

HCN      H+ + CN- KaHCN = 3.5 x10-4

SO32- + H+   HSO3- Ka SO3- = 1/K2 = 1/6.3x10-8 = 1.6 x107

------------------------------------------------------------------

HCN + SO32-     CN- +    HSO3- Kt = KaHCN x KaSO3-

Kt =( 3.5 x10-4 )/(6.3x10-8) = 5.6 x 103


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