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Which of the following aqueous solutions has the highest boiling point & minimum freezing point?
- a)0.1 M KNO3
- b)0.1 M Na3PO4
- c)0.1 M BaCl2
- d)0.1 M K2SO4
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Which of the following aqueous solutions has the highest boiling point...
Colligative property like elevation in boiling point and depression in freezing point is related to the no of moles or particles of substance, if the moles are larger the colligative properties are large
in this case Na3PO4 dissociate to give 4 ions for the same concentration 1M as:-
Na3PO4 -----> 3 Na+ + PO43-
total 4 ions more than that of other options
in this case Na3PO4 dissociate to give 4 ions for the same concentration 1M as:-
Na3PO4 -----> 3 Na+ + PO43-
total 4 ions more than that of other options
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Which of the following aqueous solutions has the highest boiling point...
Explanation:
To determine which aqueous solution has the highest boiling point and minimum freezing point, we need to consider the properties of the solute and its effect on the boiling and freezing points of the solution.
Boiling Point:
The boiling point of a solution is influenced by the presence of solute particles. When solute particles are added to the solvent, the boiling point of the solution increases due to the phenomenon of boiling point elevation. This is because the solute particles disrupt the solvent's regular boiling process.
Freezing Point:
The freezing point of a solution is also affected by the presence of solute particles. When solute particles are added to the solvent, the freezing point of the solution decreases due to the phenomenon of freezing point depression. This occurs because the solute particles interfere with the formation of the solvent's crystal lattice during freezing.
Now let's analyze each option:
a) 0.1 M KNO3
- The KNO3 dissociates into K+ and NO3- ions in solution.
- Both K+ and NO3- ions are small and highly solvated by water molecules.
- However, the concentration of ions is relatively low, so the effect on boiling and freezing points will be limited.
b) 0.1 M Na3PO4
- The Na3PO4 dissociates into 3 Na+ and 1 PO4^3- ions in solution.
- The presence of multiple ions increases the concentration of solute particles in the solution.
- This higher concentration of ions leads to greater boiling point elevation and freezing point depression compared to option a).
c) 0.1 M BaCl2
- The BaCl2 dissociates into 1 Ba^2+ and 2 Cl- ions in solution.
- The concentration of ions is lower compared to option b), resulting in a lower effect on boiling and freezing points.
d) 0.1 M K2SO4
- The K2SO4 dissociates into 2 K+ and 1 SO4^2- ions in solution.
- Similar to option c), the concentration of ions is lower compared to option b), resulting in a lower effect on boiling and freezing points.
Therefore, option b) 0.1 M Na3PO4 has the highest boiling point and minimum freezing point among the given options due to the presence of multiple ions in the solution, resulting in a greater effect on the boiling and freezing points.
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Which of the following aqueous solutions has the highest boiling point & minimum freezing point?a)0.1 M KNO3b)0.1 M Na3PO4c)0.1 M BaCl2d)0.1 M K2SO4Correct answer is option 'B'. Can you explain this answer? for Chemistry 2025 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Which of the following aqueous solutions has the highest boiling point & minimum freezing point?a)0.1 M KNO3b)0.1 M Na3PO4c)0.1 M BaCl2d)0.1 M K2SO4Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Chemistry 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following aqueous solutions has the highest boiling point & minimum freezing point?a)0.1 M KNO3b)0.1 M Na3PO4c)0.1 M BaCl2d)0.1 M K2SO4Correct answer is option 'B'. Can you explain this answer?.
Which of the following aqueous solutions has the highest boiling point & minimum freezing point?a)0.1 M KNO3b)0.1 M Na3PO4c)0.1 M BaCl2d)0.1 M K2SO4Correct answer is option 'B'. Can you explain this answer? for Chemistry 2025 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Which of the following aqueous solutions has the highest boiling point & minimum freezing point?a)0.1 M KNO3b)0.1 M Na3PO4c)0.1 M BaCl2d)0.1 M K2SO4Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Chemistry 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following aqueous solutions has the highest boiling point & minimum freezing point?a)0.1 M KNO3b)0.1 M Na3PO4c)0.1 M BaCl2d)0.1 M K2SO4Correct answer is option 'B'. Can you explain this answer?.
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