Need help narrowing down these choices describing the phenomenon when fatty acids are added to water. Group of answer choices
1= Water molecules form an ordered cage that surrounds the hydrocarbon chain of the fatty acid.
2=As time goes by, the fatty acids come together and interact with each other through their hydrocarbon chains.
3= Water molecules interact with the hydrocarbon chain of the fatty acid to lower the enthalpy.
4= The carboxylate group of the fatty acid interacts with water molecules.
5= Water molecules can be free to move around if they do not directly contact with the hydrocarbon chain of the fatty acids.
I know 1 is true, so is 2 and 3. but I am little iffy on 3 and 5.
help is appreciated.
To determine which of the options are true, we can break down the statements and analyze them individually.
1. Water molecules form an ordered cage that surrounds the hydrocarbon chain of the fatty acid.
This statement describes the process known as micelle formation, in which water molecules arrange themselves in a specific structure around the hydrophobic (non-water-loving) part of the fatty acid, i.e., the hydrocarbon chain. This statement is indeed correct.
2. As time goes by, the fatty acids come together and interact with each other through their hydrocarbon chains.
This statement describes the process of aggregate formation when fatty acids are added to water. Over time, the hydrocarbon chains of the fatty acids interact with one another, forming larger structures. This statement is also true.
3. Water molecules interact with the hydrocarbon chain of the fatty acid to lower the enthalpy.
This statement is describing the phenomenon known as hydrophobic interaction. When fatty acids are added to water, the water molecules interact with the hydrophobic chains, reducing the enthalpy of the system. This statement is correct.
4. The carboxylate group of the fatty acid interacts with water molecules.
This statement is not specifically related to the phenomenon of fatty acids being added to water. Therefore, it is not directly applicable to the given question. However, it is true that the carboxylate group of the fatty acid can interact with water molecules.
5. Water molecules can be free to move around if they do not directly contact with the hydrocarbon chain of the fatty acids.
This statement describes the concept of solvation and the role of water molecules in forming a solvent shell around the fatty acids. When water molecules do not come into direct contact with the hydrocarbon chains, they can freely move around. This statement is also accurate.
In conclusion, based on the analysis:
- Statements 1, 2, 3, and 5 are true.
- Statement 4, although valid, is not directly related to the given phenomenon.