AP EAMCET · Chemistry · Some Basic Concepts of Chemistry
A carbon compound contains \(12.8 \%\) of carbon, \(2.1 \%\) of hydrogen and \(85.1 \%\) of bromine. The molecular weight of the compound is 187.9. Calculate the molecular formula of the compound.
(Atomic weight: \(\mathrm{H}=1.008, \mathrm{C}=12.0, \mathrm{Br}=79.9\) )
- A \(CH_3Br\)
- B \(CH_2Br_2I\)
- C \(C_2H_4Br_2\)
- D \(C_2H_3Br_3\)
Answer & Solution
Correct Answer
(C) \(C_2H_4Br_2\)
Step-by-step Solution
Detailed explanation
Empirical formula \(=\mathrm{CH}_2 \mathrm{Br}\) Empirical formula mass \(=12+2+80=94\) Factor, \(n=\frac{\text { Molecular mass }}{\text { Empirical formula mass }}\) \(=\frac{187.9}{94}=2\) Molecular formula…
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