Molar Mass of Solvent Formula:
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Definition: This calculator determines the molar mass of a solvent using its cryoscopic constant, molar enthalpy of fusion, and freezing point.
Purpose: It's useful in physical chemistry for understanding solvent properties and for applications in freezing point depression studies.
The calculator uses the formula:
Where:
Explanation: The formula relates the solvent's molar mass to its colligative properties and phase transition characteristics.
Details: Knowing the molar mass helps in determining molecular structure, purity analysis, and in preparing solutions with precise concentrations.
Tips: Enter the cryoscopic constant, molar enthalpy of fusion, and freezing point in Kelvin. All values must be positive numbers.
Q1: What is the cryoscopic constant?
A: It's a constant that relates the freezing point depression to the molality of the solute in the solvent.
Q2: Where can I find the molar enthalpy of fusion?
A: It's typically found in chemical reference tables or can be determined experimentally using calorimetry.
Q3: Why is the freezing point in Kelvin?
A: The formula requires absolute temperature, which is measured in Kelvin in thermodynamic equations.
Q4: What's the typical range for cryoscopic constants?
A: Common values range from 1.7 K·kg/mol (water) to 40 K·kg/mol (camphor), depending on the solvent.
Q5: How accurate is this calculation?
A: It provides theoretical values assuming ideal behavior. For precise work, experimental verification is recommended.