[Markleahy]

A strong infrared absorption at 1710 cm-1 is most likely an indication of what functional group

a) C=O

b) O-H

c) C=C

d) C-Br

[discodermolide]

Please show your own attempts at answering the questions. This is a forum policy.

[Markleahy]

I think it's A . Carbonyl group

[discodermolide]

Yes it's the carbonyl group.

[Woopy]

How do you show an attempt for this question? It's an either you know it or you don't know it

[discodermolide]

I agree it's difficult in this case to show your attempt, but in more normal questions you can present your attempt.

[curiouscat]

How do you show an attempt for this question? It's an either you know it or you don't know it

You say a b c or d.

[Borek]

You check your notes or google for characteristic frequencies/wavelengths of functional groups, then you list these numbers, and explain why they answer/don't answer the question. Effort means "trying to find the information on my own".