What effect does the presence of the sodium sulfite group on methyl orange have on the solubility of methyl orange in water? If this group were absent, would you expect the solubility of the resulting molecule to be more or less soluble in hexane than methyl orange, and why?

The anionic sulfite group makes the molecule much more soluble in a polar solvent like water. If it weren't there, its solubility in hexane would improve, since the rest of the molecule is pretty non-polar.

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mickymike92 mickymike92 · Answer 2 · 2022-03-18T15:38:03+01:00

Due to the polar nature of the sulfite group, the solubility of methyl Orange in water is increases.

What are polar compounds?

Polar compounds are compounds which have charged groups in their molecules.

The presence of charged groups in polar compounds increases their solubility in water.

Organic compounds are usually non-polar compounds and are insoluble in water.

However, the presence of polar group in organic compounds increases their solubility in water.

Thmhe sodium sulfite group on methyl Orange is polar and hence, increases the solubility of methyl orange in water.

The methyl Orange molecule will be less soluble without the sulfite group.

Therefore, the solubility of methyl Orange in water is increased due to the sulfitegroup.

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