Chemistry · Hydrocarbons
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Which of the following is Bayer's reagent ?
- A
Br2/H2O.
- B
Dilute alkaline KMnO4.
- C
ZnCl2/HCl.
- D
Br2/CCl4.
Baeyer's reagent is a solution of potassium permanganate (KMnO4) in sodium hydroxide (NaOH) used to test for the presence of unsaturation in organic compounds. The purple color of the permanganate ion is reduced to a brown precipitate of manganese dioxide (MnO2) in the presence of an unsaturated compound.
Br2/H2O is not Bayer's reagent. It is a reagent used to test for the presence of unsaturation in organic compounds. It is also known as the Bromine water test. When an organic compound is added to the bromine water, the orange-brown color of the bromine water disappears if the compound is unsaturated.
Baeyer's reagent is a solution of potassium permanganate (KMnO4) in sodium hydroxide (NaOH) used to test for the presence of unsaturation in organic compounds. The purple color of the permanganate ion is reduced to a brown precipitate of manganese dioxide (MnO2) in the presence of an unsaturated compound.
ZnCl2/HCl is not Bayer's reagent. It is a reagent used in organic chemistry as a Lewis acid catalyst in reactions such as the Friedel-Crafts acylation and alkylation reactions. It is also used in the synthesis of certain organic compounds.
Br2/CCl4 is not Bayer's reagent. It is a reagent used to test for the presence of unsaturation in organic compounds. It is also known as the Bromine test. When an organic compound is added to the Br2/CCl4 solution, the orange-brown color of the Br2/CCl4 solution disappears if the compound is unsaturated.
Tagged under Chemistry · Hydrocarbons · 2021