Part C: Discussion 1. Which ion (cation or anion) appears to be responsible for the flame colors of all the ionic compounds tested? Explain. 2. Which ionic compounds tested in this experiment would be good for making purple fireworks? 3. Give an ionic compound not used in this experiment that would be good for making red fireworks? Potassium gluconate (K1+C6H11O71) produces a light purple flame. Copper (II) sulfate (Cu2+SO42) produces a green flame. What flame color would you expect for copper(II) gluconate (Cu2+[C6H11O71]2) ? Explain