Does anyone know why Glucose is soluble in water but is not soluble in Hexane?
glucose=polar with the O-H groups and hydrogen bondings
hexane=non-polar
No. It is true that hexane is an organic molecule; however, glucose is an organic molecule, also.
other choices included; glucose has fewer hydrogens than hexane.
Glucose is C6H12O6; hexane is C6H12 so it can't be this one.
hexane is an organic solvent and glucose is not an organic compound.
Both are organic compounds
compounds that contain oxygen will repel compounds that don't.
I wouldn't buy into this as a general rule. For example, I'm essentially positive that a long-chain alcohol would be soluble in hexane and that would violate the rule. However, of the three choices you have, this one is the closest.
I still agree with the answer by anonymous that it's a case of polarity and hydrogen bonding. Personally I think the oxygen repelling answer is nonsense.
None of those other choices fit. Like dissolves like. Glucose has OH groups; water has OH groups. But polarity is the best choice.
? confused. Are you saying none of those choices can be correct?
Those are the only choices to chose from though. I too thought it was about polarity, but as I said, I got it wrong.
The only other one I could maybe go with is the hexane is an organic and glucose is not. I think that is true?
an organic compound is any compound with carbon atoms in it! so hexane and glucose are both organic compounds.
Yes, Glucose is soluble in water but not soluble in hexane. The reason for this lies in the nature of the intermolecular forces involved.
Glucose is a polar molecule, meaning it has an uneven distribution of charge due to the presence of multiple hydroxyl (-OH) groups. In water, which is also a polar molecule due to its oxygen atom and hydrogen atoms, the positive and negative charges of glucose interact with the charges of water molecules through hydrogen bonding. This allows glucose to dissolve in water.
However, hexane is a nonpolar molecule as it consists solely of carbon and hydrogen atoms. Nonpolar molecules do not have the required charges or polar groups to form strong interactions with polar molecules like glucose. Therefore, hexane cannot break the strong hydrogen bonds between glucose and water and cannot dissolve it.
To determine the solubility of a substance in different solvents, one must consider the nature of the intermolecular forces involved. In this case, the polarity of glucose and the polar nature of water enable their interaction and solubility. Conversely, the nonpolar nature of hexane prevents it from interacting with and dissolving glucose.
* I had written that water is polar and so is glucose, while hexane is non polar. But I got it wrong.
other choices included; glucose has fewer hydrogens than hexane.
hexane is an organic solvent and glucose is not an organic compound.
compounds that contain oxygen will repel compounds that don't.