1. Calculate the value of %T for an absorbance value A = 1.5. Using this result, explain why absorbance measurements >1 may not be accurate.
2. Write a balanced chemical equation for the reaction of Copper(II) sulfate and concentrated Ammonia to produce tetraamminecopper(II) sulfate.
3. [Cu(NH3)4]2+solutions exhibit a deep blue-violet color. How can you use spectrophotometry toconfirm that this reaction has occurred and that the product formed is in fact tetraaminecopper(II)sulfate? Would you expect the wavelength of maximum absorbance (ƛmax) for Cu(NH3)42+to be greater than or less than ƛmaxfor Cu(H2O)62+? Explain.You can use a spectrophotometer to record the absorption spectrum of [Cu(NH3)4]2+and compareit to an actual spectrum of the compound to see if the numbers match each other. Cu(NH
4. The electron transitions responsible for the colors of transition metal ions involve d → d transitions. Why are zinc ions colorless in aqueous solution?