1.

How will you distingusih 1-butane and 2-butne ?

Answer»

Solution :`CH_3-underset("1-butyne")(CH_2)-c-=CH `
`CH_3-underset("2-butyne")(C )-=C-CH_(3)`
In 1-butyne, terminal carbon atom contains atom one acidic hydrogen, THEREFORE it will react with silver NITRATE in the presence of AMMONIUM hydroxide to give silver butynide. Wheras 2-butyne does not undrego such type of the reaction, because of the absence of acidic hydrogen.
(i) `CH_3-underset("1-butyne")(CH_(2))-C-=CH+2AgNO_(3)+2NH_(4)OHtoCH_(3)-CH_(2)-underset("Silver butynide")(CH_(2))-C C-=C-Agdarr+2NH_(4)NO_(3)+2H_(2)O`
`underset("2-butyne")(CH_(3)-C-=C-CH_(3)+2AgNO_(3)+2NH_(4)OHtoNo` reaction


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