W POP lovudly? 22. A primary haloalkane (X) on dehydrohalogenation yields a compound (Y), which when reacted with HCN gives (Z). The compound Z on hydrolysis gives propanoic acid. IdentifyX,Y and Z.
Answers
Answer:
Test for silver nitrate.
In this test, an aqueous or alcoholic KOH solution is used to warm the halo chemical being tested. Following the addition of AgNO3 solution, dilute HNO3 is used to acidify the solution.
A precipitate forming suggests the presence of alkyl, benzyl, or allyl halides. It should be impossible to dissolve the precipitate with HNO3.
b. If no precipitate forms, vinyl or aryl halides are present.
Lassaigne's type, second.
The purpose of this test is to pinpoint the halogen that is present in the chemical. In this experiment, the chemical containing sodium metal is heated to create Lassaigne's solution. Silver nitrate solution is used to treat the lasagne's solution after it has been acidified with dilHNO3. Halogen is present because precipitate forms.
The chemical contains the element chlorine, which is shown by the formation of a white precipitate that is soluble in ammonium hydroxide.
The compound contains the element bromine, which is indicated by the formation of a pale yellow precipitate that is only partially soluble in ammonium hydroxide. Iodine is present when a yellow precipitate forms that is insoluble in ammonium hydroxide.
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