JEE Mains · Chemistry · STD 11 - 1. Some basic concept of chemistry
Compound \(A\) contains \(8.7\, \%\) Hydrogen, \(74\, \%\) Carbon and \(17.3\,\%\) Nitrogen. The molecular formula of the compound is .... Given : Atomic masses of \(C , H\) and \(N\) are \(12,1\) and \(14\, amu\) respectively. The molar mass of the compound \(A\) is \(162\, g\, mol ^{-1}\).
- A \(C _{4} H _{6} N _{2}\)
- B \(C _{2} H _{3} N\)
- C \(C _{5} H _{7} N\)
- D \(C _{10} H _{14} N _{2}\)
Answer & Solution
Correct Answer
(D) \(C _{10} H _{14} N _{2}\)
Step-by-step Solution
Detailed explanation
\(C\) \(74 \,\%\) \(\frac{74}{12}=6.16\) \(\frac{6.16}{1.23}=5\) \(N\) \(17.3\, \%\) \(\frac{17.3}{14}=1.23\) \(\frac{1.23}{1.23}=1\) \(H\) \(8.7 \,\%\) \(\frac{8.7}{1}=8.7\) \(\frac{8.7}{1.23}=7\) Emperical formula \(= C _{5} NH _{7}\) Emperical weight \(=81\) Multiplying…
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