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COMEDK · Chemistry · 17. Solutions

Which among the following compounds has the highest freezing point of its 1 molal aqueous solution?

  1. A \(\mathrm{CF}_3 \mathrm{COOH}\)
  2. B \(\mathrm{CCl}_3 \mathrm{COOH}\)
  3. C \(\mathrm{CH}_3 \mathrm{COOH}\)
  4. D \(\mathrm{Cl}_2 \mathrm{CHCOOH}\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(\mathrm{CH}_3 \mathrm{COOH}\)

Step-by-step Solution

Detailed explanation

The freezing point depression is given by \(\Delta T_f = i \times K_f \times m\). Since the molality \(m\) and the cryoscopic constant \(K_f\) are the same for all solutions, the freezing point depends on the van't Hoff factor \(i\). A higher freezing point corresponds to a…