QQuestionChemistry
QuestionChemistry
Question 3: Draw the molecule given the following spectrums and molecular formula.
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Answer
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Step 1:: Identify the functional group and molecular formula.
This is evident from the broad peak around 3300 cm$^{-1}$, which corresponds to the O-H stretching vibration.
From the given infrared (IR) spectrum, we can identify the presence of an alcohol functional group. The molecular formula is C^2H^6O, indicating that the molecule is ethanol.
Step 2:: Draw the structure of the molecule.
Since we have identified the molecule as ethanol, we can draw its structure as follows: CH^3CH^2OH
Step 3:: Verify the structure with the given IR spectrum.
Let's analyze the IR spectrum to further confirm our proposed structure.
Step 4:
The broad peak around 3300 cm$^{-1}$ corresponds to the O-H stretching vibration of the alcohol group.
Step 5:
The sharp peak around 2980 cm$^{-1}$ is attributed to the C-H stretching vibration of alkanes, which is present in our molecule.
Step 6:
The peak around 1450 cm$^{-1}$ corresponds to the C-H bending vibration of alkanes.
Step 7:
The weak peak around 1050 cm$^{-1}$ is attributed to the C-O stretching vibration of alcohols.
These observations align with our proposed structure, confirming that we have drawn the correct molecule.
Final Answer
CH^3CH^2OH
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