141k views
3 votes
A solution contains 600.0 g of Barium Sulfate BaSO4, a electrolyte dissolved

in 345 g of water. What is the boiling point of the solution?

A solution contains 600.0 g of Barium Sulfate BaSO4, a electrolyte dissolved in 345 g-example-1
User Cara
by
8.8k points

1 Answer

4 votes

To find the boiling point elevation of the solution, we can use the following equation:

ΔTb = Kb x molality

where ΔTb is the boiling point elevation, Kb is the molal boiling point elevation constant (for water, Kb = 0.512°C/m), and molality is the molal concentration of the solution.

To determine the molality, we need to first calculate the number of moles of Barium Sulfate in the solution:

moles of BaSO4 = mass / molar mass

moles of BaSO4 = 600.0 g / 233.38 g/mol (molar mass of BaSO4)

moles of BaSO4 = 2.572 mol

Then, we can calculate the molality of the solution:

molality = moles of BaSO4 / mass of water (kg)

molality = 2.572 mol / 0.345 kg

molality = 7.451 m

Finally, we can use the equation above to calculate the boiling point elevation:

ΔTb = 0.512°C/m x 7.451 m

ΔTb = 3.817°C

So, the boiling point of the solution would be 3.817°C higher than the boiling point of pure water. If we assume the boiling point of pure water to be 100°C, then the boiling point of the solution would be 103.817°C.

User Alexander Pope
by
8.7k points