Choose the molecule that is most likely to produce a spectrum with these IR frequencies: v = 2979, 2869, 1126 cm A) butane B) 1-butene C) diethyl ether D) butanoic acid E) 2-butanone

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Counterfeit drugs are a common problem in developing regions of the world. Oftentimes, counterfeit pills are made with compounds such as lactose. A lab technician has obtained the IR spectrum shown above for a sample reported to be citalopram, an antidepressant drug. Does the IR spectrum belong to citalopram or lactose? Explain your answer by describing what feature of the IR spectrum confirms your choice and describe what feature is missing from the IR spectrum for the other compound. A. citalopram B. lactose

Choose the most intense mass spectrum signal for 12 m/z 29 m/z 41 m/z 57 m/z А D

Determine the structures of these spectrums. (C4H10O has an unsaturation of 1) (C8H14O4 has an unsaturation of 4)

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Calculate the exact resonance frequency for the two signals of 1,3-dichloropropane B = 3.75 Cl-C- C-C- B JAB=6.2 Hz A = 2.20 TMS 90 Hz, ア 6 5 4 2 1 O ô ppm I-0-IM I-U-IA I-y-IB

#2) Using the following spectra and other information provided, identify the compound. Assign pertinent peaks in the spectra. Label the peaks on the spectrum and place the structure of the compound in the box on the right side of the spectrum - Identify correct compound - label proton spectrum - label carbon spectrum

A) alcohol B) alkane C) alkene D) alkyne 4000 3000 2000 1500 1000 500 E) aldehyde An IR spectrum of an unknown compound is shown below. Predict the primary structural feature present in this compound.

Which compound is