AP EAMCET · Chemistry · Solutions
Which of the following solutions has the lowest freezing point?
- A \(1 \mathrm{M}\) Urea
- B \(1 \mathrm{M} \mathrm{Na}_2 \mathrm{SO}_4\)
- C \(1 \mathrm{M} \mathrm{NaCl}\)
- D \(1 \mathrm{M} \mathrm{Al}_2\left(\mathrm{SO}_4\right)_3\)
Answer & Solution
Correct Answer
(D) \(1 \mathrm{M} \mathrm{Al}_2\left(\mathrm{SO}_4\right)_3\)
Step-by-step Solution
Detailed explanation
Urea do not dissociate in solution. Sodium chloride gives two ions, while sodium sulphate gives three ions per formula unit and aluminium sulphate give five ions per formula unit. ' Therefore, the effective number of particles is maximum in aluminium sulphate and it shows the…
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