* Boiling Point Elevation: Adding a solute (like salt) to a solvent (like water) increases the boiling point of the solution. This is called boiling point elevation.
* Concentration Matters: The more solute you add, the higher the boiling point elevation. A concentrated solution will have a higher boiling point than a dilute solution.
To determine the boiling point:
1. You need the concentration: The concentration of the sodium chloride solution needs to be specified, usually in terms of molarity, molality, or percentage by mass.
2. Use the boiling point elevation formula: The boiling point elevation is calculated using the formula:
ΔT = Kb * m
Where:
* ΔT = change in boiling point
* Kb = ebullioscopic constant for water (0.512 °C/m)
* m = molality of the solution (moles of solute per kg of solvent)
Example:
Let's say you have a 1 molal (1 m) solution of NaCl.
* ΔT = (0.512 °C/m) * (1 m) = 0.512 °C
Since the normal boiling point of pure water is 100 °C, the boiling point of this 1 m NaCl solution would be approximately 100.512 °C.
In conclusion: You need to know the specific concentration of the sodium chloride solution to calculate its boiling point.
