$0.99 g$ of organic compound containing halogen when heated with furning $H N O_{3}$ in presence of $A g N O_{3}$ in a carius tube gave $0.287 g$ of white precipitate. The percentage of halogen is?

29.6

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71.7

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35.4

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64.2

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Solution

The correct option is B $71.7$
If mass of organic compound $= x$
Mass of Agx formed $= y$
$∴ 1$ mol of $A g x$ has $f$ mol of $X$
$∴ %$ of halogen $= \frac{Atamic mass of x \times y}{Molecular mass of Ag x \times x} \times 100$
given $x = c l, x = 0.99 g, y = 0.28 g$
$∴$ %of halogen $= \frac{35.5 \times 0.287}{143.5 \times 0.99} \times 1000$
$= 71.7$
correct ctrswer - $B$

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0.99g of organic compound containing halogen when heated with furning HNO3 in presence of AgNO3 in a carius tube gave 0.287g of white precipitate. The percentage of halogen is?

The correct option is B 71.7If mass of organic compound =x Mass of Agx formed =y ∴1 mol of Agx has f mol of X∴% of halogen = Atamic mass of x×y Molecular mass of Agx×x×100given x=cl,x=0.99g,y=0.28g∴ %of halogen =35.5×0.287143.5×0.99×1000=71.7correct ctrswer - B

$0.99 g$ of organic compound containing halogen when heated with furning $H N O_{3}$ in presence of $A g N O_{3}$ in a carius tube gave $0.287 g$ of white precipitate. The percentage of halogen is?