12.) Boiling point elevation- Given that the Kb for
water is 0.51° C/m, calculate the boiling...
12.) Boiling point elevation- Given that the Kb for
water is 0.51° C/m, calculate the boiling point of a solution
containing 71.0 g of Na2SO4 dissolved in 350 g of
water.
The boiling point elevation constant for water is 0.51 degrees
C/m. What is the boiling point of a solution made by dissolving
21.6g of a non-ionizing solute with a molar mass of 103.5 g/mol in
187g of water?
The boiling point constant for water is 0.51 Kkg/mol. Calculate
boiling point of water in a solution gf 0.010 mol/kg of sugar and a
solution of 0.010 mol/kg of NaCl.
The boiling point of ethanol is 78.3oC and the
boiling point elevation constant (Kb) is
1.22oC/m. The freezing point for ethanol is
-114.1oC and the freezing point depression constant
(Kf) is 1.99oC/m. 87.8 g of the dye
crystal violet (molar mass = 407.98 g/mol) is dissolved in 500.0 g
of pure ethanol.
a.) What is the new boiling point of the resulting crystal
violet solution?
b.) What is the new freezing point of the resulting crystal
violet solution?
The normal boiling point for acetone is 56.5°C. At an elevation
of 5700 ft, the atmospheric pressure is 623 torr. What would be the
boiling point of acetone (ΔHvap = 32.0 kJ/mol)
at this elevation?
_____ °C
What would be the vapor pressure of acetone at 25.0°C at this
elevation?
_____ torr
Calculate the boiling point of a water solution at each
concentration.
Part A
0.225 m
Express your answer using three decimal places.
Boiling Point =
∘C
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Part B
3.78 m
Express your answer using two decimal places.
Boiling Point =
∘C
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Part C
4.33 m
Express your answer using two decimal places.
Boiling Point =
∘C
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Part D
7.77 m
Express your answer using two decimal places.
Boiling Point =
∘C ...
The formula that governs the depression of freezing point and
elevation of boiling point for a solution consisting of a solute
dissolved in a solvent is: ΔT = i × kb × m
where: ΔT = the temperature change between a pure solvent and
its solution
i = the number of species per mole of solute that are dissolved
in the solvent (e.g., i = 1 for a non-ionic solute that does not
break apart into ions; i = 2...
1. Which of these aqueous solutions has the highest
boiling point? [Kb= 0.512]
(a) 1.25 M C6H12O6 (b) 1.25 M KNO3 (c) 1.25 M Ca(NO3)2 (d) they
all have the same boiling point
2. Which of these aqueous solutions has the highest
boiling point? [Kb= 0.512]
(a) 1.25 M C6H12O6 (b) 1.25 M KNO3 (c) 1.25 M Ca(NO3)2 (d) they
all have the same boiling point
3. A solution contains a mixture of substance A and substance B,
both of...
Given: Calculate the freezing point and boiling point of a
solution containing 17.0 g of naphthalene (C10H8) in 119.0 mL of
benzene. Benzene has a density of 0.877 g/cm3.
Part A
Calculate the freezing point of a solution.
(Kf(benzene)=5.12∘C/m.)
Part B
Calculate the boiling point of a solution.
(Kb(benzene)=2.53∘C/m.)