1. Tardigrade
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  3. Chemistry
  4. 36.4 g of 1, 1, 2, 2-tetrachloropropane was heated with zinc dust and the product was bubbled through ammonical AgNO3. What is the weight of precipitate obtained?

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Q. $36.4 \,g$ of $1$, $1$, $2$, $2$-tetrachloropropane was heated with zinc dust and the product was bubbled through ammonical $AgNO_3$. What is the weight of precipitate obtained?

Haloalkanes and Haloarenes

Solution:

The dehalogenation of vicinal tetrahaloalkane gives alkynes. It is done by heating the compound with Zn dust.
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$\because 182\,g$ of tetrachloro alkane gives $147 \,g$ of $ppt$.
$\therefore 36.4\, g$ of tetrachloro alkane gives $\frac{147\times36.4}{182}$
$=29.4\,g$ of precipitate