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Some Basic Concepts of Chemistry
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12/08/2021 11:06 am
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In an organic compound of molar mass 108 g mol-1 C, H and N atoms are present in 9 : 1 : 3.5 by mass. Molecular formula can be:
(a) C6H8N2
(b) C7H10N
(c) C5H6N3
(d) C4H18N3
1 Answer
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12/08/2021 11:13 am
Correct answer: (a) C6H8N2
Explanation:
C H N
Moles \(\frac{9}{12}\) \(\frac{1}{1}\) \(\frac{3.5}{14}\) n = \(\frac{108}{54}\) = 2
\(\frac{3}{4}\) : 1 : \(\frac{1}{4}\)
3 : 4 : 1
⇒ C3H4N ⇒ M.F = (C3H4N)n
MF = (C3H4N)2 = C6H8N2