Answer Happy

Not all of the blanks will be used because each sample will not always contain that many colours. Some will have more and some less. Once you have all of your experimental data, calculate the Rr value for each colour. In the right margin, show the set-up for the first two R, calculations. The rest can be done mentally. Metal Colour Of Metallic lon Solvent Colours Present On Chromatogram Centre Of Each Solution In The Bottle Front Rr Value of Each Individual Colour Colour (mm) (mm) #1 = copper, Cu²+ #4 = Unknown C #2 = nickel, Ni²+ # 3 = iron, Fe³+ # 5 = Unknown D Fe³+ Metal Unknowns C [#4] D [#5] Cu Fo Before development, which metal ions on your chromatogram are visible? Cu²+ Ni²+ NI
Before development, which metal ions on your chromatogram are not visible? Circle your choice(s). Fe³+ Cu² NI² What reagent was used to develop the copper(II) ion? What colour was the developed copper(II)ion? What reagent was used to develop the nickel(II)ion? What colour was the developed nickel(II)ion? What colour were your metal unknowns, C & D: Before development with NH3: After development with NH3 C: D: Before development with dimethylgloxime: After development with dimethylgloxime: C: D: On the basis of your R values and your paper chromatogram, answer the following: Unknown C Original Colour of Unknown C on the Chromatogram Before Development Colour(s) Present On the Chromatogram After Developing Unknown C Unknown C contains which metal ions? (Cu²+, Ni²+, Fe³+)? Unknown D Original Colour of Unknown D on the Chromatogram Before Development Colour(s) Present On the Chromatogram After Developing Unknown D Unknown D contains which metal ions? (Cu, Ni2, Fe)?