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9 April, 09:22

What tests would you use to identify a solution of ag3po4?

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  1. 9 April, 12:34
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    Hello!

    There are two tests one could use to identify a solution of Ag₃PO₄ (keep in mind that this compound is very insoluble and very little amounts of it are in solution)

    For Ag⁺ ion: Precipitate with NaCl. The adding of NaCl should produce a white precipitate.

    Ag⁺ (aq) + NaCl (s) → AgCl (s) ↓ + Na⁺

    For PO₄⁻³ ion: Precipitate with Ammonium Molybdate and Acid. This reaction should produce a yellow precipitate:

    PO₄⁻³ + 3NH ₄⁺ + 12MoO ₄⁻² + 24H ⁺ → (NH ₄) ₃PO₄.12MoO₃ (s) ↓ + 12H ₂ O

    Have a nice day!
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