Tuesday
July 7, 2015

Homework Help: Chemistry

Posted by Joe on Tuesday, February 19, 2013 at 9:16pm.

1) Frank and Oswalt report a molar absorptivity of 4700 L mol^-1 cm^-1 for thiocyanatoiron(lll) ion. What absorbance would you expect for a soloution that it 1.0e-4 M in thiocyanatorion(lll) ion, if the path length is 1.00 cm?

2) At a given temperature, the equilibrium constant for the system studied in this experiment is 1.40e+2. Suppose 100.0 ml of 2.00e-3 M KSCN was mixed with 100.0 ml of 2.00e-3 M Fe(NO_3_)_3_. At equilibrium, what molar concentration of the thiocyanatoiron(lll) ion would you expect?

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