The molecular formula of an unknown compound, X, is C₆H₁₀O₂ - VCE - SSCE Chemistry - Question 2 - 2010 - Paper 1
Question 2
The molecular formula of an unknown compound, X, is C₆H₁₀O₂.
The infrared C₁³C NMR and H¹NMR spectra of this compound are shown below.
**Infrared Spectrum:**
(The ... show full transcript
Worked Solution & Example Answer:The molecular formula of an unknown compound, X, is C₆H₁₀O₂ - VCE - SSCE Chemistry - Question 2 - 2010 - Paper 1
Step 1
Identify significant peaks in the infrared spectrum.
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Answer
In the infrared spectrum, significant peaks appear around 1700 cm⁻¹, which usually indicates the presence of a carbonyl group (C=O). Additional peaks in the region of 3300 cm⁻¹ often correspond to O-H stretching vibrations.
Step 2
Analyze the ¹³C NMR spectrum.
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The ¹³C NMR spectrum shows a limited number of peaks, suggesting that there are not many distinct carbon environments. Given the molecular formula, expect to see peaks corresponding to different types of carbons in the compound.
Step 3
Analyze the ¹H NMR spectrum.
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In the ¹H NMR spectrum, peaks should appear in a limited range, which can be attributed to the presence of hydrogen atoms in various structural environments. Analyze the relative integration of these peaks to deduce the number of hydrogen atoms on each carbon.
