Original post by hujikolp
No
Can't help then. All I remember is you look at where the black lines are and what they match up with. It may help if you post the actuall question.
Original post by hujikolp
Need hellpppp
There's not a lot you can do with IR.
You can try and match large absorptions with a table of typical absorpton wavelengths to identify possible functional groups. Hydrogen bonding is normally a very broad -OH absorbance in alcohols and carboxylic acids. Carbonyl is fairly obvious.
If you suspect the identity of a compound you can compare it's IR with the sample (fingerprinting)
Original post by charco
There's not a lot you can do with IR.
You can try and match large absorptions with a table of typical absorpton wavelengths to identify possible functional groups. Hydrogen bonding is normally a very broad -OH absorbance in alcohols and carboxylic acids. Carbonyl is fairly obvious.
If you suspect the identity of a compound you can compare it's IR with the sample (fingerprinting)
You can try and match large absorptions with a table of typical absorpton wavelengths to identify possible functional groups. Hydrogen bonding is normally a very broad -OH absorbance in alcohols and carboxylic acids. Carbonyl is fairly obvious.
If you suspect the identity of a compound you can compare it's IR with the sample (fingerprinting)
What can I say for propanal
Original post by hujikolp
What can I say for propanal
There will be a strong absorption due to the carbonyl group C=O stretching at about 1670 - 1820 cm-1.
There will be also be a C-H stretch at about 3000 cm -1 and C-H bends at about 1400 cm-1
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