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Q1. What if the equation for the equilibrium were: How would the expression for

ID: 902507 • Letter: Q

Question

Q1. What if the equation for the equilibrium were:
How would the expression for the Kc be written?

Fe3 + 2SCN --> Fe(SCN)2

Q2 If the reaction in question 1 is correct, the concentrations of Fe3+ at equilibrium in each
sample would be the same as you calculated in part 2 of the calculations section. But the
values for the equilibrium concentrations of SCN- would change. They would be
calculated as follows:
Why is that? (Assume that the Spec 20 measurements still gave correct values for the
concentration of the product

Explanation / Answer

Kc

It is not correct equation

It should be like this

Fe3 + + 3SCN-    --> Fe(SCN)3

and Kc would be

Kc=

Kc

It is not correct equation

It should be like this

Fe3 + + 3SCN-    --> Fe(SCN)3

and Kc would be

Kc=

Kc

It is not correct equation

It should be like this

Fe3 + + 3SCN-    --> Fe(SCN)3

and Kc would be

Kc=