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Which ion can be detected using a precipitation reaction with silver nitrate? A - HSC - SSCE Chemistry - Question 2 - 2021 - Paper 1
Question 2
Which ion can be detected using a precipitation reaction with silver nitrate? A. Ag⁺ B. Cl⁻ C. Mg²⁺ D. NO₃⁻
Worked Solution & Example Answer:Which ion can be detected using a precipitation reaction with silver nitrate? A - HSC - SSCE Chemistry - Question 2 - 2021 - Paper 1
Step 1
Which ion can be detected using a precipitation reaction with silver nitrate?
Answer
To determine which ion can be detected using a precipitation reaction with silver nitrate (AgNO₃), we must consider the common reactions that occur with the ions listed:
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Ag⁺ (Silver Ion): This ion is the same as the reagent and will not form a precipitate when mixed with AgNO₃.
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Cl⁻ (Chloride Ion): Chloride ions react with silver nitrate to form silver chloride (AgCl), a white precipitate. This precipitation is a classic test for chlorine ions.
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Mg²⁺ (Magnesium Ion): Magnesium ions do not form a precipitate with silver nitrate under normal conditions.
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NO₃⁻ (Nitrate Ion): Nitrate ions do not precipitate with silver nitrate; they remain in solution.
Based on this analysis, the only ion that can be detected using a precipitation reaction with silver nitrate is the chloride ion (Cl⁻). Therefore, the answer is B. Cl⁻.