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Question

Acetylene reacts with ammonical AgNO3, forming:

A
silver acetylide
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B
silver acetate
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C
metal silver
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D
silver mirror
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Solution

The correct option is A silver acetylide
Silver acetylide is fomed, when the acetylene reacts with ammoniacal AgNO3.
C2H2+2AgNO3+2NH4OHC2Ag2+2NH4NO3+2H2O
It is called Tollen's Test. The silver acetylide forms a white ppt. This test is used to determine the presence of a triple-bond in hydrocarbons.

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