How would the accuracy of your determined K_eq change if all of your volume meas

Question

How would the accuracy of your determined K_eq change if all of your volume measurements were made with graduated cylinders rather than pipets? If all of the SCN^- was not converted completely to FeNCS^2+ when the calibration curve was prepared, would this raise or lower the value of K_eq? Explain. Use the mean value you determined for K_eq to calculate the SCN^- concentration in a solution whose initial Fe^3+ concentration was 4.00 times 10^-2 M and initial SCN^- concentration was 1.00 times 10^-3 M. Is all of the SCN^- in the form of FeNCS^2+ ?

Explanation / Answer

1) Keq depends upon equilibrium concentrations which are minute and can be measured accurately with
   pipet. Graduated cylinder would not be accurate to measure such small volumes, the error would be great
   if a graduated cylinder was used instead of a pipet.
2) If all of SCN- was not completely converted to FeCNS2+ then that means Keq will be pretty high because
the reaction favors the formation of product more and few reactant is left out.

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