- Spectrum Of Cu Nh3 4 Nm 420 430 440 450 460 470 480 490 Beer S Law Ml 0 1 M Cuso4 1 2 3 4 5 6 7 8 9 10 A 0 019 0 07 1 (54.9 KiB) Viewed 49 times
experiment. With the given information, please determine the
following:
- Spectrum Of Cu Nh3 4 Nm 420 430 440 450 460 470 480 490 Beer S Law Ml 0 1 M Cuso4 1 2 3 4 5 6 7 8 9 10 A 0 019 0 07 2 (38.58 KiB) Viewed 49 times
A = Elc
where A: Absorbance
c: molar concentration
l= path length (in this experiment, its 1cm)
e= molar absorption coefficient
- The molarity of the unknown concentration of Cu(NH3)4 will be
determined using the Beer's Law plot.
Spectrum of Cu(NH3)4² > (nm) 420 430 440 450 460 470 480 490 Beer's Law mL 0.1 M CuSO4 1 2 3 4 5 6 7 8 9 10 A 0.019 0.070 0.076 0.081 0.084 0.103 0.151 0.223 moles mL CuSO4 2.5M NH₂ 5 5 5 5 5 5 5 5 5 5 0.0001 0.002 0.003 0.004 0.005 0.006 0.007 0.008 0.009 0.0010 λ(nm) 500 510 520 530 540 550 560 570 moles NH₁ 0.0125 0.0125 0.0125 0.0125 0.0125 0.0125 0.0125 0.0125 0.0125 0.0125 A 0.310 0.387 0.496 0.603 0.713 0.802 0.874 0.946 λ(nm) 580 590 600 610 620 630 640 650 moles conc Cu(NH3)4²+ Cu(NH3)4²+ formed 0.0001 0.02 0.002 0.4 0.003 0.6 0.004 0.8 0.005 1.0 0.006 1.2 0.007 1.4 0.008 1.6 0.009 1.8 0.0010 0.2 A 1.004 1.030 1.043 1.038 1.019 0.988 0.947 0.902 conc Cu(NH))+ 0.0002 0.004 0.006 0.008 0.01 0.012 0.014 0.016 0.018 0.002 A 0.105 0.172 0.220 0.334 0.378 0.450 0.541 0.710 0.786 0.938
Results max for Cu(NH3)4²+ El for Cu(NH3)42+ Molarity of Unknown Cu(NH3)2+ solution Find el from plots of A vs [Cu(NH)2+] done by hand and Excel. Show calculation of el Show calculation of molarity of unknown Cu(NH3)42+ solution