Multiple Choice
Which of the following aqueous solutions would have the higher boiling point?
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14. Solutions
Boiling Point Elevation
Multiple Choice
Which of the following is the correct formula for calculating boiling point elevation?
A
ΔT_b = i K_f m
B
ΔT_b = K_f m
C
ΔT_b = i K_b m
D
ΔT_b = K_b / m
Verified step by step guidance1
Understand that boiling point elevation is a colligative property, which means it depends on the number of solute particles in a solvent, not their identity.
Recall the general formula for boiling point elevation: \(\Delta T_b = i K_b m\), where:
- \(\Delta T_b\) is the boiling point elevation (the increase in boiling point),
- \(i\) is the van't Hoff factor, representing the number of particles the solute dissociates into,
- \(K_b\) is the ebullioscopic constant (a property of the solvent), and
- \(m\) is the molality of the solution (moles of solute per kilogram of solvent).
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