IRQuestions

IRQuestions - B no change occurs in the dipole moment...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
IR Practice 4. The IR absorption due to the stretching of which of these carbon-hydrogen bonds occurs at the highest frequency? A) I B) II C) III D) IV E) V 1. An oxygen-containing compound which shows no IR absorption at 1630-1780 cm -1 or at 3200-3550 cm -1 is likely to be what type of compound? A) An alcohol B) A carboxylic acid C) An ether D) A ketone E) An aldehyde 2. The absorption band for the O-H stretch in the IR spectrum of an alcohol is sharp and narrow in the case of: A) a Nujol mull of the alcohol. B) a concentrated solution of the alcohol. C) a gas phase spectrum of the alcohol. D) the spectrum of the neat liquid. E) none of these. 3. An anticipated IR absorption band may not be observed because: A) it occurs outside the range of the instrument used.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: B) no change occurs in the dipole moment during the vibration. C) the absorption band is eclipsed by another. D) the intensity is so weak that it cannot be differentiated from instrument noise. E) All of these 5. IR evidence for the presence of the C=C would be most difficult to detect in the case of which of these alkenes? A) B) C) D) E) 6. The IR spectrum of which type of compound will not show evidence of hydrogen bonding? A) Aldehyde B) Alcohol C) Carboxylic acid D) Phenol E) Primary amine 7. The IR spectrum of which type of compound generally exhibits evidence of hydrogen bonding? A) Aldehyde B) Carboxylic acid C) Alkene D) Ester E) Ketone Answers : 1. (C) 2. (C) 3. (E) 4. (E) 5. (D) 6. (A) 7. (B)...
View Full Document

This note was uploaded on 03/14/2010 for the course CHEM 241 taught by Professor Kuehnert during the Spring '10 term at Shoreline.

Page1 / 2

IRQuestions - B no change occurs in the dipole moment...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online