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Really confused about this, since there is carbon and two other types of atoms: should be polar, right? However, some people online say it is non-polar. Also, is it soluble in water?

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  • $\begingroup$ I'm going to bed, but some hints, before I come back to answer (if no one else does): You should think of the shape, as well as the atoms themselves. Types of atoms aren't the only important factors in predicting polarity. An example is Carbon dioxide. And if a substance is polar, it'll assumingly dissolve in water, but that's a rule of thumb. $\endgroup$ – M.A.R. Mar 1 '15 at 21:50
  • $\begingroup$ The shape tells me it is polar: not symmetrical at all. Also, since there is carbon and hydrogen PLUS oxygen, it should be polar. However, I don't think it dissolves in water well, so maybe non-polar? $\endgroup$ – NoobCoder Mar 1 '15 at 22:23
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Well it has polar groups - carboxylic and phenolic but benzene ring reduces its polarity. One could say carbon atoms win 7:3 with oxygens, but it's still not bad :) PubChem say it's solubility is about 2g/L, but this site gives more info - it dissolves much better in hot water and its solubility in methanol, which is quite polar, is good, and in benzene (non-polar) bad. Generally it seems to be somewhere in the middle between strongly polar and strongly non-polar compounds.

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  • $\begingroup$ So would you say it has dipole dipole forces or not? $\endgroup$ – NoobCoder Mar 1 '15 at 23:05
  • $\begingroup$ Yes, also hydrogen bonding. $\endgroup$ – Mithoron Mar 1 '15 at 23:36

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