General Organic ChemistryHard

Question

In Carius method of estimation of halogens, 250 mg of an organic compound gave 141 mg of AgBr. The percentage of bromine in the compound is : (at. mass Ag = 108; Br = 80)

Options

A.48
B.60
C.24
D.36

Solution

Organic compound AgBr 
                                                           =
Number of moles of AgBr = Number of moles of Br- =
∴ mass of Br = × 10−3 × 80
∴ mass % of Br = × 100 
                                                 = 24

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