infrared spectromesery@

Question 1

How does this work?

Answer 1

= certain functional groups absorb infra red radiation at charactersitic frequencies

Question 2

What is below 1500 called?

Answer 2

= finger print region
= unique for every compound

Question 3

How do computers identify the molecule?

Answer 3

= computer will compare the IR spectra agaisnt a a database of known pure compounds to identify the compound

Question 4

What is the C=O region like on the spectra?

Answer 4

= sharp
= big peak
=

Question 5

What is the OH alcohol group like?

Answer 5

= broad big
= near the end
= next to CH peak
= 3200-3600

Question 6

What is the C=O and O-H peak carboyxlic acid like?

Answer 6

= C=O is fat and broad- it covers the
=1700
C-H peal
= an OH acid peak- near the finger print region- 2500- 3300

Question 7

What is the C=C peak like?

Answer 7

= like c=o but shorter

Question 8

What is the N-H peak like?

Answer 8

= very short
= small, similar postion to OH

Question 9

How can the spectra detect impurities?

Answer 9

= comparing the spectrum of pure compounds

Question 10

What else can occur?

Answer 10

= rough absorptions
= indicators of impurities
=

Question 11

Where is the C-H stretch?

Answer 11

= 2700

Question 12

Where is the C-H stretch?

Answer 12

= 2900

Question 13

what else does an aldehyde have?

Answer 13

= next to the C-H peak there is another peak at 2700