Table 1 Volume of reactant for each beaker for part 1 Beaker 0200M FeNO 3 3 ml

# Table 1 volume of reactant for each beaker for part 1

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Table 1: Volume of reactant for each beaker for part 1 Beaker 0.200M Fe(NO 3 ) 3 (ml) 0.002M SCN - (ml) H 2 O(ml) 1 5.0 0.0 45.0 2 5.0 2.0 43.0 3 5.0 3.0 42.0 4 5.0 4.0 41.0 5 5.0 5.0 40.0 The colorimeter is connected to channel 1 of the Vernier computer interface and been calibrated to 470 nm with distilled water. Run data for beaker 1,2,3,4 and 5 for 1 minute each and dispose the solution properly after data collection completed. The curvetted been filled until ¾ full for each data collection. From collected data from part 1, the linear regression line has been computed which resulting in Abs=2972.2[FeSCN 2+ ](equation 3)(graph 1). For part 2, 5ml of unknown concentration of SCN - , 5 ml of 0.200 M of Fe(NO 3 ) 3, and 40 ml of distilled water were mix into the same beaker and let for 4 minutes for the system reach equilibrium. The cuvette has been filled until ¾ full with the mixture and been put into the colorimeter for 1 minute. The graph has been interpolated to find the concentration of the unknown concentration of SCN - that
resulting in 9.93*10 -4 M of SCN - . For part, 3,5 different test tubes containing five different concentrations of solution based on table 2 been prepared. Table 2: Volume of reactant for each test tube Test Tube 0.0020M Fe(NO 3 ) 3 (ml) 0.0020M SCN - (ml) H 2 O(ml) 1 3.00 0.00 7.00 2 3.00 2.00 5.00 3 3.00 3.00 4.00 4 3.00 4.00 3.00 5 3.00 5.00 2.00 Each solution in the test tube undergone the same process as part 1. The data collected from the run from part 3 been used to compute the equilibrium constant based on equation 2 by utilized the ICE table for each data pair. The applicable experimental data have been shown in

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