An unknown solution is determined to contain either sodium chloride (NaCl) or so

Question

An unknown solution is determined to contain either sodium chloride (NaCl) or sodium sulfate (Na2SO4). Using a precipitation reaction, how could you identify the unknown? Specificy which ion you would add to the unkown and how the results would identify which compound is in the unknown. An unknown solution is determined to contain either sodium chloride (NaCl) or sodium sulfate (Na2SO4). Using a precipitation reaction, how could you identify the unknown? Specificy which ion you would add to the unkown and how the results would identify which compound is in the unknown.

Explanation / Answer

Add BaCl2 (aq) solution. If the unkown is having sodium chloride (NaCl) no percipitate will be formed. In case of sodium sulfate (Na2SO4) white percipitate (BaSO4) is formed on addition of BaCl2 (aq) solution.

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