Using Other Organic Chemistry Lab Techniques Practice Test

An organic chemist carries out a reaction she believes will install a carboxylic acid functional group in her substrate. To verify the reaction worked, she measures the infrared (IR) spectrum of the compound. Which of the following absorption features would confirm the presence of a carboxylic acid?

A sample containing the product of an organic reaction is submitted for analysis via mass spectrometry. The results show a mass spectrum with a parent ion of 100 m/z units. Which of the following structures is a possible product compound?