A) \[FeC{{l}_{2}}\]
B) \[FeC{{l}_{3}}\]
C) \[A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\]
D) \[AlC{{l}_{3}}\]
Correct Answer: C
Solution :
Elevation of boiling point is colligative property hence, it is directly proportional to number of moles of particles in solution. One mole of\[FeC{{l}_{2}}\] give three moles ions, one mole of \[FeC{{l}_{3}}\] give four mole ions, one mole of \[A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\] give five mole ions and one mole of \[AlC{{l}_{3}}\] give four mole ions. Hence \[A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\] has highest boiling point.
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