
Can someone help me understand the reasoning behind this problem?
The answer key says it's B, but I picked E.
This was my logic:
A. This is not correct because many compounds have the same empirical formulas but have different molecular formulas, C2H2 and C6H6 for example.
B (the correct option)****. This also should be incorrect because if temperature is constant, molar mass will be the deciding factor for Vrms. Since Hydrogen has smaller molar mass than oxygen, and Vrms and molar mass inversely proportional, Hydrogen should move faster.
C. This is not the case all the time. For instance hexane has higher boiling point than acetone, despite having only LDF.
D. Not correct because it's also dependent on the mass(m/V)
E (the one I chose). I know if something is soluble, it will stay in the solution unchanged, as a form of ion and called spectators(?). This seemed like the best option, so I chose that.
Any help would be appreciated!