You find yourself working in a lab and you must make an aqueous solution of Compound X. It dissolves immediately in the water in your beaker. What can you conclude?

Question

You find yourself working in a lab and you must make an aqueous solution of Compound X.  It dissolves immediately in the water in your beaker.  What can you conclude?

BlackTom AI · Accepted Answer

The question describes a scenario where Compound X dissolves immediately in water. This observation is the key clue for assessing the options.
Option 1: 'It is making nonpolar covalent bonds with the water' — This is incorrect. Water is polar, and dissolving a substance often involves interactions between polar or ionic sites of the solute and water molecules. Forming covalent bonds with water molecules would imply chemical reaction or adduct formation, which is not indicated by mere dissolution. In general, nonpolar covalent interactions do not account for immediate dissolution in water.
Option 2: 'It is a hydrophilic compound' — This is the most consistent interpretation. Hydrophilic substances are attracted to water and tend to dissolve readily due to polarity or ability to form hydrogen bonds with water molecules.
Option 3: 'It is a lipid' — Lipids are typically hydrophobic or amphiphilic and do not dissolve readily in water. If Compound X were a lipid, immediate dissolution in water would be unlikely, contradicting the observed behavior.
Option 4: 'It is a hydrophobic compound' — Hydrophobic compounds resist dissolution in water because they lack favorable interactions with water, leading to poor solubility. The fact that it dissolves immediately makes this option implausible.
Overall, the immediate dissolution in water strongly supports hydrophilicity, while the other options describe properties that would generally impede or contradict water solubility. The observation aligns with the concept that solubility in water correlates with polar or charged characteristics of a compound, enabling favorable interactions with water molecules.

Bio 93 Section CDE 2025 Midterm 1- Section E

You find yourself working in a lab and you must make an aqueous solution of Compound X. It dissolves immediately in the water in your beaker. What can you conclude?

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