Calculate The Boiling Point Of A Solution Containing 0.163 M Mgf2

Boiling Point Elevation Formula:

\[ T_b = T_0 + i \times K_b \times m \]

Pure Solvent Boiling Point (T₀):

°C

Boiling Point Elevation Constant (K_b):

°C kg/mol

Molality (m):

mol/kg

Van't Hoff Factor (i):

(unitless)

Boiling Point Elevation (ΔT_b):

Solution Boiling Point (T_b):

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1. What is Boiling Point Elevation?

Boiling point elevation is a colligative property that describes how the boiling point of a solvent increases when a non-volatile solute is added. The extent of boiling point elevation depends on the number of solute particles in the solution, not their identity.

2. How Does the Calculator Work?

The calculator uses the boiling point elevation formula:

\[ T_b = T_0 + i \times K_b \times m \]

Where:

\( T_b \) — Boiling point of the solution (°C)
\( T_0 \) — Boiling point of the pure solvent (°C)
\( i \) — Van't Hoff factor (number of particles per formula unit)
\( K_b \) — Boiling point elevation constant (°C kg/mol)
\( m \) — Molality of the solution (mol/kg)

For MgF₂ solution: MgF₂ dissociates into 3 ions (Mg²⁺ + 2F⁻), so the Van't Hoff factor (i) is 3.

3. Importance of Boiling Point Calculation

Details: Understanding boiling point elevation is crucial in various applications including chemical engineering, food processing, pharmaceutical manufacturing, and determining molecular weights of unknown compounds.

4. Using the Calculator

Tips: Enter the pure solvent boiling point (typically 100°C for water), boiling point elevation constant (0.512°C kg/mol for water), molality of the solution, and Van't Hoff factor (3 for MgF₂).

5. Frequently Asked Questions (FAQ)

Q1: Why does MgF₂ have a Van't Hoff factor of 3?
A: MgF₂ dissociates completely in water to produce 3 ions: one Mg²⁺ cation and two F⁻ anions.

Q2: What is the typical K_b value for water?
A: The boiling point elevation constant for water is 0.512°C kg/mol.

Q3: Does boiling point elevation depend on the type of solute?
A: Only indirectly through the Van't Hoff factor. The elevation depends on the number of particles, not their chemical nature.

Q4: Why use molality instead of molarity?
A: Molality (moles per kg of solvent) is temperature-independent, making it more suitable for colligative property calculations.

Q5: Can this calculator be used for other solvents?
A: Yes, simply input the appropriate T₀ and K_b values for the specific solvent being used.