Carboxylic acids

Question 1

When naming what position does the carbox group always fall on?

Answer 1

The carboxylic acid is always on the number one carbon, thus naming is always -Oic acid

Question 2

How can carbox acids be water soluble? Why are they soluble?

Answer 2

If they are fewer than six carbons in the chain, then they are water soluble. Because hydrogen bonds will be able to form between the func group.

Question 3

What is formed when a carbox acid reacts with a metal oxide?

Answer 3

metal salt+water

Question 4

What occurs when reacted with an alkali?

Answer 4

A neutralisation reaction will occur forming water+salt

Question 5

What happens when reacted with a carbonate?

Answer 5

Water+Carbon dioxide and a metal salt

Question 6

What test can be used to check for the pressence of a carboxylic acid? ( relates to questioned reactions)

Answer 6

effervecence as the carboxylic acid reacts with a carbonate, forming gaseos CO2 will show the presence of a carboxylic acid.

Question 7

Which two reactants could be used as a test for a carboxylic acid?

Answer 7

Either: Na2CO3 (s) or NaHCO3 (aq)

Question 8

How can we form a carboxylic acid? (Reactants and their conditions)

Answer 8

Either a primary alcohol or an aldehyde can be refluxed with an excess oxidising agent (K2Cr2O7/H+)