AIIMS 2014 Chemistry Colligative Properties MCQ Question
Which of the following aqueous solutions has the highest boiling point?
0.1 M KNO3
0.1 M Na3PO4
0.1 M BaCl2
00.1 M K2SO4
Correct Answer
Detailed Explanation
The boiling point elevation of an aqueous solution is determined by the number of particles (ions) it dissociates into, according to colligative properties. Among the options, 0.1 M K2SO4 dissociates into 3 ions (2 K+ and 1 SO4^2-), which results in a higher total concentration of solute particles compared to the other solutions. Therefore, 0.1 M K2SO4 has the highest boiling point due to the greater number of particles in solution.
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