26.3 carboxylic acids Flashcards
which sort of carboxylic acids are very soluble in water?
carboxylic acids with up to 4 carbon atoms
what happens to the solubility of carboxylic acids as the chain length increases?
solubility decreases
why does the solubility of carboxylic acids decrease as the chain length increases?
non- polar chain has a greater effect on the overall polarity of the molecule
what is carboxylic acid classified as?
weak acids
write the dissociation of carboxylic acid
HCOOH(aq) H+(aq) + HCOO-(aq)
draw a carboxylate ion
page 464
what is the test for the carboxyl group?
add sodium carbonate
effervescence of CO2, positive test
why do phenols not react with carbonates?
not acidic enough
write the reaction of ethanoic acid with calcium oxide
2Ch3COOH(aq) + CaO(s) -> (CH3COO-)2Ca^2+(aq) + H2O(l)
write the reaction of ethanoic acid with sodium hydroxide
CH3COOH(aq) + NaOH(aq) -> CH3COO-Na+(aq) + H2O(l)
what is the ionic equation of an acid with alkali?
H+(aq) + OH-(aq) -> H2O(l)
what is formed when a carboxylic acid reacts with a metal oxide?
carboxylate salt and water
what is formed when a carboxylic acid reacts with an alkali?
carboxylate salt and water
what is formed when a carboxylic acid reacts with carbonates?
carboxylate salt, carbon dioxide and water
