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2. Can Na2SO4 be used as a precipitating agent to separate a mixture of Fe2+ and...

2. Can Na2SO4 be used as a precipitating agent to separate a mixture of Fe2+ and Ca2+? Explain.

3. Can ammonia be used as a precipitating agent to separate a mixture of Al3+ and Cu2+? Explain.


Describe a possible step-by-step procedure for separating a mixture of Ca2+, Al3+, Fe3+, and Zn2+. Be clear about what precipitating agent you will add in what order, and what will get filtered out at each step. At the end, you should have each of the metal ions separated and in their solid compound forms.

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