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Explain silver mirror Test. |
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Answer» Solution :Tollen's reagent is a SILVER ammonia complex. `[Ag(NH_(3))_(2)](+) OH^(-)` (2) When an aldehyde, like acetaldehyde is heated with Tollen's reagent, it is oxidised to acetic acid and silver ions ` Ag^(+)` in Tollen's reagent complex are REDUCED to silver (Ag) giving greyish black precipitate or DEPOSITION of silver on innter suface of the test TUBE which shines like a mirror. Hence this test is also called silver mirror test.  (3) This test is not given by KETONES. (4)Hence Tollen's reagentis used to distinguish between aldehydes and ketones. |
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