Consider the following set of reactions
If 0.1 moles of silver salt is taken and the weight of the residue obtained is 54 g, then what will be the molecular mass of CH₃(CHBr)_nCH₃? (Given: Br = 80, Ag = 108)

Question

Consider the following set of reactions

If 0.1 moles of silver salt is taken and the weight of the residue obtained is 54 g, then what will be the molecular mass of CH₃(CHBr)_nCH₃? (Given: Br = 80, Ag = 108)

TestHub · Accepted Answer

Identify n from Silver residue: Thermal decomposition of 0.1 m o l of the silver salt C H 3 ​ ( C H COO A g ) n ​ C H 3 ​ yields 0.1 nm o l es of silver ( A g ) residue. Calculate n : M a sso f A g = 0.1 n × 108 = 54 g ⟹ n = 10.8 54 ​ = 5 . Determine Formula: Substituting n = 5 gives the molecular formula C H 3 ​ ( C H B r ) 5 ​ C H 3 ​ . Calculate Molecular Mass: M a ss = ( 7 × 12 ) + ( 11 × 1 ) + ( 5 × 80 ) = 84 + 11 + 400 = 495.00 .

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