Question

What is the boiling point change for a soln containing 0.870 mol of naphthalene (a nonvolatile,...

What is the boiling point change for a soln containing 0.870 mol of naphthalene (a nonvolatile, nonionizing compound) in 250. g of liquid benzene? (Kb = 2.53°C/m for benzene)

Homework Answers

Answer #1

Solution :-

moles of naphthalene = 0.870 mol

mass of benzene = 250 g

250 g * 1 kg / 1000 g = 0.250 kg

Lets calculate the molality of the solution

molality = moles / kg solvent

             = 0.870 mol / 0.250 kg

             = 3.48 m

formula to calculate the change in the boiling point is as follows

Delta Tb = Kb * m

             = 2.53 C/m * 3.48 m

             = 8.80 C

So the change in the boiling point is 8.80 C

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Calculate the freezing point and boiling point of a solution containing 18.4 g of naphthalene (C10H8)...
Calculate the freezing point and boiling point of a solution containing 18.4 g of naphthalene (C10H8) in 114.0 mL of benzene. Benzene has a density of 0.877 g/cm3. (Kf(benzene)=5.12∘C/m.) (Kb(benzene)=2.53∘C/m.)
Calculate the freezing point and boiling point of a solution containing 13.6 g of naphthalene (C10H8)...
Calculate the freezing point and boiling point of a solution containing 13.6 g of naphthalene (C10H8) in 110.0 mL of benzene. Benzene has a density of 0.877 g/cm3. A)Calculate the freezing point of a solution. (Kf(benzene)=5.12∘C/m.) B)Calculate the boiling point of a solution. (Kb(benzene)=2.53∘C/m.)
What is the boiling point of a solution containing 0.200 mol of a nonvolatile solute in...
What is the boiling point of a solution containing 0.200 mol of a nonvolatile solute in 125 g of benzene (C6H6)?
Calculate the freezing point and boiling point of a solution containing 16.0 g of naphthalene (C10H8)...
Calculate the freezing point and boiling point of a solution containing 16.0 g of naphthalene (C10H8) in 109.0 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.)
1. Ethylene glycol [CH2(OH)CH2(OH)] is a common automobile antifreeze. Calculate the freezing point and boiling point...
1. Ethylene glycol [CH2(OH)CH2(OH)] is a common automobile antifreeze. Calculate the freezing point and boiling point of a solution containing 323 g of ethylene glycol and 1025 g of water. (Kb and Kf for water are 0.52°C/m and 1.86°C/m, respectively.) freezing point ___  °C boiling point ___°C 2. Calculate the molar mass of naphthalene, the organic compound in mothballs, if a solution prepared by dissolving 10.0 g of naphthalene in exactly 200 g of benzene has a freezing point 2.0°C below...
Calculate the freezing point and boiling point of a solution containing 16.4 g of naphthalene (C10H8)...
Calculate the freezing point and boiling point of a solution containing 16.4 g of naphthalene (C10H8) in 115.0 mL of benzene. Benzene has a density of 0.877g/cm3. What is the freezing point and the boiling point of the solution?
Calculate the freezing point and boiling boing of a solution containing 11.4 g of naphthalene in...
Calculate the freezing point and boiling boing of a solution containing 11.4 g of naphthalene in 109.0 mL benzene.
What is the boiling point of a solution made by dissolving 15.4 g of CCl4 in...
What is the boiling point of a solution made by dissolving 15.4 g of CCl4 in 80.0 g of benzene? (The boiling point of pure benzene is 80.1°C and Kb = 2.53 °C/m.)
The boiling point of benzene C6H6 is 80.10°C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves...
The boiling point of benzene C6H6 is 80.10°C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in benzene is estrogen (estradiol). How many grams of estrogen, C18H24O2 (272.4 g/mol), must be dissolved in 258.0 grams of benzene to raise the boiling point by 0.450 °C ? ______g estrogen.
Calculate the boiling point (in degrees C) of a solution made by dissolving 8.5 g of...
Calculate the boiling point (in degrees C) of a solution made by dissolving 8.5 g of naphthalene {C10H8} in 40.9 g of benzene. The Kbp of the solvent is 2.53 K/m and the normal boiling point is 80.1 degrees C. Enter your answer using 2 decimal places.