When we put a drop of NaOH into the copper chloride, it went from blue to purple. After it mixed though, it went from black to its original color. When we put the the NaOH in the iron chloride, it turned orange into a darker shade of it after about 3-4 drops.
CONCLUSION: When i added drops of NaOH to the copper chloride, i believe it turned into CuCl3. The phenolphthalen i believe, is what made the iron & copper chloride turn into a darker shade of its color.
ERROR ANALYSIS: What I believe what i did wrong was that we added to much red/pink phenolphthalen before it began to show clearly . Or maybe an indecisive drop of NaOh into the copper chloride and maybe the mixture wasn't mixed well enough.
You added one drop to Copper Chloride, but it went back to blue....so the reaction wasn't complete (evidenced by the indicator). Did you add more? How much more? How did that get you a formula of CuCl3? How did you make the jump to Iron Chloride (as opposed to Copper Chloride)?
ReplyDeleteI don't see data or results supporting your conclusions or calculations.