Calculate The Boiling Point Of A Solution Containing 0.61 G

Boiling Point Elevation Formula:

\[ T_b = T_0 + i K_b \left( \frac{0.61 / M}{W} \right) \]

Pure Solvent Boiling Point (T₀):

°C

Van't Hoff Factor (i):

Boiling Point Constant (K_b):

°C·kg/mol

Molar Mass (M):

g/mol

Solvent Mass (W):

Boiling Point of Solution (T_b):

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1. What is Boiling Point Elevation?

Boiling point elevation is a colligative property where the boiling point of a solution is higher than that of the pure solvent. It occurs because the presence of solute particles lowers the vapor pressure of the solution, requiring more energy (higher temperature) to reach boiling.

2. How Does the Calculator Work?

The calculator uses the boiling point elevation formula:

\[ T_b = T_0 + i K_b \left( \frac{0.61 / M}{W} \right) \]

Where:

\( T_b \) — Boiling point of solution (°C)
\( T_0 \) — Boiling point of pure solvent (°C)
\( i \) — Van't Hoff factor (dimensionless)
\( K_b \) — Boiling point elevation constant (°C·kg/mol)
\( M \) — Molar mass of solute (g/mol)
\( W \) — Mass of solvent (kg)
0.61 — Mass of solute (g)

Explanation: The formula calculates how much the boiling point increases when 0.61 g of solute is dissolved in a given mass of solvent.

3. Importance of Boiling Point Calculation

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

4. Using the Calculator

Tips: Enter the boiling point of the pure solvent, van't Hoff factor, boiling point constant, molar mass of solute, and mass of solvent. All values must be positive numbers with appropriate units.

5. Frequently Asked Questions (FAQ)

Q1: What is the van't Hoff factor?
A: The van't Hoff factor (i) represents the number of particles a solute dissociates into in solution. For non-electrolytes, i = 1; for electrolytes, it depends on the degree of dissociation.

Q2: How do I find the K_b value for a solvent?
A: K_b values are tabulated constants. For water, K_b = 0.512 °C·kg/mol. Other solvents have different values that can be found in chemistry reference tables.

Q3: Why is the solute mass fixed at 0.61 g?
A: This calculator is specifically designed for solutions containing 0.61 g of solute, which may represent a standard experimental condition or specific application.

Q4: Can this calculator be used for any solvent?
A: Yes, as long as you know the pure solvent boiling point (T₀) and its boiling point elevation constant (K_b).

Q5: What are typical values for boiling point elevation?
A: For dilute solutions, boiling point elevations are typically small, ranging from 0.1°C to a few degrees Celsius, depending on the solute concentration and solvent properties.