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Grade: 12th pass

                        

Which gas decolourises alkaline KMnO4 solution but does not give precipitate with ammonical AgNo3 soln? Please explain.

2 years ago

Answers : (1)

Arun
24742 Points
							
Alkanes are saturated hydrocarbons. It means that every carbon is bonded to as many hydrogen atoms as possible. They participate in very few reactions. One of them being free-radical reactions.Alkenes, on the other hand, are more reactive than alkanes. Alkenes are unsaturated hydrocarbons. When alkenes react with alkaline KMnO4, the alkenes are oxidized to alcohols. One hydroxyl group attaches to each carbon on either side of the carbon-carbon double bond. KMnO4 is first reduced to MnO4(2-), a dark green solution and then it's further reduced to MnO2, a dark brown precipitate.This same reaction happens with acidic KMnO4 as well. But KMnO4 gets reduced all the way down to Mn2+ ions.
2 years ago
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