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I recommend color for Ni. The Al and Sn are colorless while most Ni solutions are green or blue. Co solutions are pink to blue. Remember that Al is amphoteric; i.e., it forms a white gelatinous ppt with NaOH which dissolves in an excess.
Ni forms a hydroxide also but it isn't colorless and doesn't dissolve in an excess of NaOH. Be careful, Sn is white and can be dissolved in an excess.
Solutions of NiSO4(aq), Al2 (SO4)3 (aq),
CoSO4 , and SnSO4 (aq) are in bottles labelled A, B, C, and D.
a) Design an experiment to identify which ionicsulfate solution is in which bottle. Give a list of
equipment and chemicals required. Describe
a step-by-step procedure for conducting the experiment
b) Explain why an activity series is required to identify each unknown substance
1 answer
1 answer