PHYSICS 1E03 Chapter Notes - Chapter 4: Potassium Thiocyanate, Equilibrium Constant, Spectrophotometry

• School: McMaster University
• Department: Physics
• Course: PHYSICS 1E03
• Professor: Waldemar Okon

Document Summary

Part a of the experiment was to find out the unknown concentration of fescn2+. The excess ferric nitrate helped in making the reaction move to the forward direction. After the mixing of the two chemicals, a reddish-orange coloured solution appeared. With the known concentration of kscn and the absorbance values found out, we found out the concentration of fescn2+. Absorption values for the three solutions and calculated concentrations of. Observations: part b equilibrium constant for a chemical reaction. In part b, a similar procedure was followed as the first part, however a different concentration of ferric nitrate solution (0. 002m) and the same concentration of kscn as before were used. Kscn, fe(no3)3 and h20 were mixed so the final volume of each test tube was 10ml including 5ml of ferric nitrate in each, h20 and kscn were adjusted accordingly. Equilibrium concentrations and k value for each test tube.