Question

Benzoic acid, when dissolved in benzene, which of the following is correct. *

1 point

a) The benzoic acid will undergo dissociation.

(b) The benzoic acid will undergo association.

(c) Observed molar mass of benzoic acid in benzene will less than normal molar mass.

(d) Observed molar mass of benzoic acid in benzene is more than normal molar mass.

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Answer 1

Answer:

d observed molar mass of benzonic acid in benzene is more than normal molar mass

Explanation:

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Answer 2

Answer:

(d) Observed molar mass of Benzoic acid in Benzene is more than Normal molar mass.

Explanation:

• When Benzoic Acid is dissolved in Benzene, it makes Hydrogen Bonding .
• The formula of Benzoic Acid is C₆H₅CO₂H.
• The" =O " atom of the benzoic Acid makes Hydrogen Bond with the Hydrogen of "-O-H " of the acid group present in another Benzoic Acid and vice versa.
• So one Benzoic Acid makes two Hydrogen Bond.
• So Benzoic Acid exists as dimer in Benzene.
• As a result we observe high molecular mass of Benzoic Acid in Benzene.
• The molecular mass of Benzoic Acid is 122 g/mole whereas the observed molecular mass of Benzoic Acid in Benzene is found to be 244 g/mole .
• So when Benzoic Acid is dissolved in benzene, we observe its molecular mass high than normal molecular mass