MCQ
When $32.25\,gm$ ethyl chloride dehydro halogenated, if gives $50\%$. Alkene, what is the mass of product.......$gm$ (atomic mass of chlorine = $35.5$)
  • A
    $14 $
  • B
    $28 $
  • C
    $64.5$
  • $7$

Answer

Correct option: D.
$7$
d
(d) ${{C}_{2}}{{H}_{5}}Cl$$\xrightarrow{-HCl}{{C}_{2}}{{H}_{4}}$

      $64.5$                             $28$

      $32.25$                           $28$

$64.5 \,gm$ ${C_2}{H_5}Cl$ gives $28 \,gm$ of ${C_2}{H_4}$

$32.25\,gm$ ${C_2}{H_5}Cl$ gives $ = \frac{{28 \times 32.25}}{{64.5}}$ = $14 \,gm$ of ${C_2}{H_4}$

Obtained product is $50\%$ so mass of obtained alkene $ = \frac{{14}}{2} = 7\,gm$

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