For each of the following pairs of solutes and solvent, predict whether the colo
ID: 479987 • Letter: F
Question
For each of the following pairs of solutes and solvent, predict whether the colors would be soluble or insoluble:1) malic acid in water 2) naphthalene in water 3) amphetamine in ethyl alcohol 4) aspirin in water 5) succinic acid in hexane 6) ibuprofen in diethyl ether 7) 1-Decanol in water For each of the following pairs of solutes and solvent, predict whether the colors would be soluble or insoluble:
1) malic acid in water 2) naphthalene in water 3) amphetamine in ethyl alcohol 4) aspirin in water 5) succinic acid in hexane 6) ibuprofen in diethyl ether 7) 1-Decanol in water
1) malic acid in water 2) naphthalene in water 3) amphetamine in ethyl alcohol 4) aspirin in water 5) succinic acid in hexane 6) ibuprofen in diethyl ether 7) 1-Decanol in water
Explanation / Answer
1. Malic acid in water: Soluble
Due to 2 carboxylic acid groups and hydroxyl group malic acid polar, so it is soluble in water
2. Naphthalene in water: Insoluble
Naphthalene is nonpolar, so it is not soluble in water.
3. Amphetamine in ethyl alcohol: Soluble
Due to amine functional group, Amphetamine is slightly polar, so it is soluble in ethyl alcohol.
4. Aspirin in Water: Slightly soluble
Asprin contains one carboxylic acid and also contains benzene group which is non-polar. So, Asprin soluble very little (3mg/mL) in water.
5. Succinic Acid in Hexane: Insoluble
Succinic acid is polar and hexane is non-polar. So, succinic acid is not soluble in hexane.
6. Ibuprofen in Diethyl Ether: Soluble
Both have a hydrophobic hydrocarbon-chain and ibuprofen has a
hydrocarbon ring structure. So, ibuprofen is soluble in diethyl ether.
7. 1-Decanol in Water: Insoluble (very little solubility)
Due to OH group on decanol, there is very little solubility is there in the water.
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