to find the boiling point (bp) of a solution, use the following formula:
bp solution= bp solvent + Δbp solution
bp solvent is known because we know the solvent is water and the boiling point of water is 100 °C
to find the elevation in boiling point, Δbp solution, we use the following formula
Δbp solution= Kb x i x m, where Kb is the boiling point constant, i is the number of particles, and m is molality.
Kb= 0.512
i= 1, because they told you that the solute is nonionizing.
m= ?, we need to find
molality (m)= moles/ Kg solvent
to find the moles, we can use the grams of the solvent and convert it to moles using the molar mass of the molecule.
molar mass of C10H8O6S2= 288.1 g/mol
1.00 x 10^2 g (1 mol/ 288.1 g)= 0.347 moles
the solvent is H2O, ---> 1.00 x 10^2 g= 0100 Kg water (just divide by 1000)
molality= 0.347 moles/ 0.100 Kg= 3.47 m
now that we have molality, m, we can plug it in the Δbp solution formula
Δbp solution= Kb x i x m
Δbp solution= (0.512) x (1) x(3.47)= 1.78 °C
finally, we can solve for the boiling point
bp solution= bp solvent + Δbp solution
bp solution= 100°C + 1.78°C= 101.78°C
