Question

Copper (II) solution in water has an absorbance of 0.014 Copper (II) solution in NH3 has an absorbance of 0.864 (These were prepared by adding 1mL of 0.1M CuSO4 it each of two 15cm test tubes. Adding 9mL of distilled water to I’ve test tube, and adding 9mL of 0.5M NH3 it the secon test tube.) 1. Calculate the [Cu2+] in the NH3 solution. Which solvent is best for detecting small amounts of copper and why?

Answer 1