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For the iron thiocyanate system, what is the value of the equilibrium constant, Kc, if the following are the concentrations of all species present. Provide your answer to three digits after the decimal.

FeSCN2+ 0.501
Fe3+ 0.494
SCN- 0.639

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jufsanabriasa

Answer:

Kc = 0.630

Explanation:

The equilibrium of the thiocyanate system occurs as follows:

FeSCNĀ²āŗ(aq) ā‡„ FeĀ³āŗ(aq) + SCNā»(aq)

And equilibrium constant, kc, is:

Kc = [SCNā»] [FeĀ³āŗ] / [FeSCNĀ²āŗ]

Replacing with the gven concentrations:

Kc = 0.639M*0.494M / 0.501M

Kc = 0.630

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