Refer to the figure below showing the chemical structures of cis - and trans -is
ID: 314096 • Letter: R
Question
Refer to the figure below showing the chemical structures of cis- and trans-isomers of oleic acid. The trans-oleic, also known as elaidic acid, is the main trans fat in the hydrogenated vegetable oil found in food. (Note: Each single line represents a single covalent bond. Carbons are at the vertices and are not labeled).
1) These fatty acids are acidic because of the presence of a _______ in the molecules.
a) carboxyl group (—COOH)
b)hydroxyl group (—OH)
c)C—OH bond
d)C=C double bond
e)All of the above
2)When 0.1 mole of sodium hydroxide (NaOH) is added to 1 liter of water, it ionizes, releasing OH– and Na+ ions. The resulting solution is
a) acidic
b) molar
c) basic
d) a buffer
e) neutral
1) These fatty acids are acidic because of the presence of a _______ in the molecules.
a) carboxyl group (—COOH)
b)hydroxyl group (—OH)
c)C—OH bond
d)C=C double bond
e)All of the above
2)When 0.1 mole of sodium hydroxide (NaOH) is added to 1 liter of water, it ionizes, releasing OH– and Na+ ions. The resulting solution is
a) acidic
b) molar
c) basic
d) a buffer
e) neutral
HO HO trans-Oleic acid cis-Oleic acidExplanation / Answer
Answer:
1). a) carboxyl group (—COOH)
The carboxyl group (—COOH) represents acid as it carboxylic acid (-COOH)
2). c) basic