In the mass spectrum of an organic compound, the molecular ion occurs at m/e of 86. Which of the following could be the empirical formula of the compound?
Correct answer: B. C5H11N
- A. C2H4
- B. C5H11N
- C. C7H13O
- D. C2H5F
Explanation
b) C5H11N:The molecular ion occurs at m/e 86. The empirical formula C5H11N corresponds to the compound pentylamine, which has a molecular mass of 87 g/mol. The molecular ion at m/e 86 is close to the molecular mass of pentylamine, so it is possible that this compound could have a molecular ion at m/e 86. Therefore, option b) C5H11N could be a possible empirical formula.
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