DAT Question of the Day

Correct Answer: C. Benzene, C6H6.

The law of solubility is that “Like dissolves Like”, that is non-polar solvents dissolve non-polar substances and polar solvents dissolve polar and most ionic substances.

Water is a polar solvent thus:

Salt, NaCl – ionic and very soluble in water, sea water.
Ethanol, CH3CH2OH – polar molecular (-OH) will dissolve in water, beer/wine/spirits.
Benzene, C6H6 – non-polar molecular will not dissolve in polar water.
Hydrogen chloride, HCl – polar molecular will dissolve in water, hydrochloric acid.
Acetic acid, CH3COOH – polar molecular (-COOH) will dissolve in water, vinegar.

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