MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistrySolutionsNa SO
The molecular weight of benzoic acid in benzene as determined by depression in freezing point method corresponds to:
A.ionization of benzoic acid.
B.dimerization of benzoic acid.✓ Correct
C.trimerization of benzoic acid.
D.solvation of benzoic acid.
Explanation
The molecular weight of benzoic acid in benzene is determined by the depression in freezing point method and comes out to be 244. The actual molecular weight is 122. Therefore, it corresponds to the dimer which are formed by hydrogen bond.
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