1.22 g of an organic acid is separately dissolved in 100 g of benzene () and 100 g of acetone (). The acid is known to dimerize in benzene but remain as a monomer in acetone. The boiling point of the

Question

1.22 g of an organic acid is separately dissolved in 100 g of benzene () and 100 g of acetone (). The acid is known to dimerize in benzene but remain as a monomer in acetone. The boiling point of the solution in acetone increases by 0.17°C. The increase in boiling point of solution in benzene in °C is . The value of x is (Nearest integer). [Atomic mass: C = 12.0, H = 1.0, O = 16.0]

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Strategy:
 Use the data from the acetone solution (monomer) to find the molar mass of the acid. Then, apply that molar mass and the van't Hoff factor for dimerization in benzene to find the boiling point elevation in benzene.

Step 1: Find molar mass () using acetone
, , , weight of solvent = 0.1 kg.

Step 2: Determine } i 	ext{ and elevation for benzene
Acid dimerizes in benzene ().
- .

Express as : .

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