CUET · CHEMISTRY · PYQ PAPER 2023
Which one of the following solutions will exhibit the smallest freezing point depression?
- A \(0.1\) m \(K_2SO_4\)
- B \(0.1\) m \(C_6H_{12}O_6\)
- C \(0.1\) m \(Al_2(SO_4)_3\)
- D \(0.1\) m \(KCl\)
Answer & Solution
Correct Answer
(B) \(0.1\) m \(C_6H_{12}O_6\)
Step-by-step Solution
Detailed explanation
\(\Delta T_f = i \cdot K_f \cdot m\) For constant \(K_f\) and \(m\), smallest \(\Delta T_f\) corresponds to smallest \(i\). \(K_2SO_4 \rightarrow 2K^+ + SO_4^{2-}\), \(i = 3\) \(C_6H_{12}O_6\), \(i = 1\) (non-electrolyte) \(Al_2(SO_4)_3 \rightarrow 2Al^{3+} + 3SO_4^{2-}\),…
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