(Solved): 5. What is the approximate absorption wavelength for \\( \\left.\\left[\\mathrm{Cu}(\\text { deen } ...

5. What is the approximate absorption wavelength for \\( \\left.\\left[\\mathrm{Cu}(\\text { deen })_{2}\\right]\\left(\\mathrm{BF}_{4}\\right)_{2}\\right] \\) (deen \\( =\\mathrm{N}, \\mathrm{N} \\)-diethylethylenediamine) complex? \\( \\mid 1 \\) mark| 6. Report the weight of the complex Bis(diethylammonium)tetrachlorocuprate(II) you obtained. [1 mark] 7. Based on the weight of the final product you report above, determine the \ yield based on the amount of the metal precursor used. The molecular weight of \\( \\mathrm{CuCl}_{2} \\) is \\( 134.45 \\mathrm{~g} / \\mathrm{mol} \\) and molecular weight of the final complex Bis(diethylammonium)tetrachlorocuprate(II) is \\( 279.49 \\mathrm{~g} / \\mathrm{mol} \\). Show your detailed calculations below. [ 2 marks] 8. What is the approximate absorption wavelength for the complex [Bis(diethylammonium)tetrachlorocuprate(II)? Based on the absorption wavelength, calculate the energy required for the absorption in \\( \\mathrm{kJ} \\mathrm{mol}^{-1}[2 \\) marks]