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QJEEM21Chca4f: JEE Main 2021 Chemistry - Class 11 JEEM21Chca4f Solution: In Carius method for estimation of halogens, 0.2 g of an…

In Carius method for estimation of halogens, 0.2 g of an organic compound gave 0.188 g of AgBr. The percentage of bromine in the compound is ______________. (Nearest integer)

[Atomic mass : Ag = 108, Br = 80]

Step-by-Step Verified Solution

nAgBr = 0.188g188g/mol{{0.188g} \over {188g/mol}} = 10 −- 3 mol

⇒\Rightarrow nBr = nAgBr = 0.001 mol

⇒\Rightarrow massBr = (0.001 ×\times 80) gm = 0.08 gm

⇒\Rightarrow mass% = 0.08×1000.2=40%{{0.08 \times 100} \over {0.2}} = 40\%

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