Consider the reaction: H2(g) + I2(g) 2HI(g) A reaction mixture in a 3.67 L flask at a certain temperature initially contains a mixture of 0.763 grams...

Consider the reaction: H2(g) + I2(g)  2HI(g) A reaction mixture in a 3.67 L flask at a certain temperature initially contains a mixture of 0.763 grams of H2 and 96.9 grams of I2. At equilibrium, the flask contains 90.4 grams if HI. Calculate the equilibrium constant for this reaction at this temperature. Show your work using an ICE table.

(a) This experiment is separated into parts I and II.

What are the [Fe3+] and [SCN- ] before mixing in each part?

Part A        Part B

[Fe3+] =     [Fe3+] =

[SCN-] =     [SCN-] =

(b) Briefly, explain why the concentrations of the Fe3+ and SCNare different in the two parts of the experiment.