COMEDK · Chemistry · 17. Solutions
The solution which have lowest freezing point is
- A \(0.2 \mathrm{M} \mathrm{K}_2 \mathrm{SO}_4\)
- B \(0.2 \mathrm{M} \mathrm{KCl}\)
- C \(0.2 \mathrm{M} \mathrm{NaNO}_3\)
- D \(0.2 \mathrm{M} \mathrm{MgSO}_4\)
Answer & Solution
Correct Answer
(A) \(0.2 \mathrm{M} \mathrm{K}_2 \mathrm{SO}_4\)
Step-by-step Solution
Detailed explanation
The freezing point depression is given by the formula \(\Delta T_f = i \times K_f \times m\), where \(i\) is the van't Hoff factor, \(K_f\) is the cryoscopic constant, and \(m\) is the molality. Since \(K_f\) is constant for a given solvent and the molarity \(M\) is given as…
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