Boiling Point Elevation Formula:
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Definition: Boiling point elevation refers to the increase in the boiling point of a solvent upon the addition of a solute.
Purpose: This calculator determines how much the boiling point increases based on the relative lowering of vapor pressure.
The calculator uses the formula:
Where:
Explanation: The formula relates the colligative property of vapor pressure lowering to the boiling point elevation.
Details: Understanding boiling point elevation is crucial in chemistry, food processing, and industrial applications where precise temperature control is needed.
Tips: Enter the relative lowering of vapor pressure, solvent boiling point in Kelvin, and molar enthalpy of vaporization in J/mol. All values must be > 0.
Q1: What is relative lowering of vapor pressure?
A: It's the ratio of vapor pressure lowering to the vapor pressure of the pure solvent.
Q2: How do I find the molar enthalpy of vaporization?
A: It can be found in chemical reference tables or determined experimentally.
Q3: Why does boiling point elevation occur?
A: Adding solute lowers the vapor pressure, requiring higher temperature to reach boiling.
Q4: Does this work for all solvents?
A: The formula applies to non-volatile solutes in ideal solutions.
Q5: What are typical values for boiling point elevation?
A: For dilute solutions, it's usually a few degrees at most.