ZuoTi.Pro
Question

Entropy of naphthalene: Consider naphthalene C10H8 at atmospheric pressure. It is a solid with a melting...

Entropy of naphthalene:

Consider naphthalene C10H8 at atmospheric pressure.

It is a solid with a melting point at 80.1 degrees Celsius and a boiling point at 218 degrees Celsius. The latent heat of fusion is 19,123 kJ / mol. The molar heat at constant pressure of solid naphthalene has a functional temperature dependence (in K) which is linear. Its value is 0 at T = 0 K and 188.41 J / mol-K at T = 317.15 K. The molar heat at constant pressure of liquid naphthalene has a functional temperature dependence (in K) which is also linear. At T = 357.91 K, it is 219.34 J / mol-K and at T = 460.25 K, it increases to 317.47 J / mol-K.

Find the entropy change that 1 kg of naphthalene undergoes when heated from 0 to 100 degrees Celsius at atmospheric pressure.

science   physics   
1 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Request Professional Answer

Request Answer!

We need at least 10 more requests to produce the answer.

0 / 10 have requested this problem solution

The more requests, the faster the answer.

Request! (Login Required)

All students who have requested the answer will be notified once they are available.
Know the answer?
Add Answer to:
Entropy of naphthalene: Consider naphthalene C10H8 at atmospheric pressure. It is a solid with a melting...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Similar Homework Help Questions

  • A 2.50 g sample of naphthalene, C10H8, was dissolved in 100 g of benzene. What is...

    A 2.50 g sample of naphthalene, C10H8, was dissolved in 100 g of benzene. What is the freezing point of the solution? The freezing point of pure benzene is 5.45 degrees Celsius; Kf=5.07 degrees Celsius/m. The molar mass of C10H8 is 128.17 g/mol The answer is supposed to be 4.46 degrees Celsius. How did they get there?

  • A. The normal melting point of naphthalene is 80.0 °C. At 85.8 Celsius, the liquid has...

    A. The normal melting point of naphthalene is 80.0 °C. At 85.8 Celsius, the liquid has a vapor pressure of 10.0 Torr which increases to 40.0 Torr at 119.3°c. Use this information to calculate the heat of vaporization, the normal boiling point, and the entropy of vaporiza of naphthalene. How similar is your calculated entropy change to the prediction of Trouton's rule? B. Assume that the triple point temperature of naphthalene is also 80.0 Celsius and that the sublimation pressure...

  • Naphthalene, C10H8, melts at 80.0 ˚C; the vapor pressure of the solid is 1.00 torr at 52.6 ˚C, and that of the liquid is...

    Naphthalene, C10H8, melts at 80.0 ˚C; the vapor pressure of the solid is 1.00 torr at 52.6 ˚C, and that of the liquid is 10.0 torr at 85.8 ˚C and 40.0 torr at 119.3 ˚C. Calculate: (a) the enthalpy of vaporization, the normal boiling point, and the entropy of vaporization at the boiling point; (b) the vapor pressure at the melting point (Hint: liquid and solid are in equilibrium there)

  • Calculate the change in entropy when one mole of metallic aluminum is heated at one bar...

    Calculate the change in entropy when one mole of metallic aluminum is heated at one bar pressure from an initial temperature of 25 °C to a final temperature of 750 °C. The molar heat capacities of solid and liquid aluminum at one bar pressure are 29.2 J mol' K and 31.75 J mol' K, respectively. The specific enthalpy of fusion of aluminum at its melting point (660.46 °C) is 396.57 J g! The molar mass of aluminum is 26.98 g...

  • The enthalpy of fusion of cadmium at its normal melting point of 321 °C is 6.11...

    The enthalpy of fusion of cadmium at its normal melting point of 321 °C is 6.11 kJ mol? What is the entropy of fusion of cadmium at this temperature? ASfus = J mol-K-1 The molar enthalpy of fusion of solid cadmium is 6.11 kJ mol-1, and the molar entropy of fusion is 10.3 JK+mol-1. (a) Calculate the Gibbs free energy change for the melting of 1.00 mol of cadmium at 622 K. (b) Calculate the Gibbs free energy change for...

  • The molar enthalpy of fusion of solid bismuth is 11.0 kJ mol-1, and the molar entropy...

    The molar enthalpy of fusion of solid bismuth is 11.0 kJ mol-1, and the molar entropy of fusion is 20.2 J K-1 mol-1. (a) Calculate the Gibbs free energy change for the melting of 1.00 mol of bismuth at 575 K. kJ (b) Calculate the Gibbs free energy change for the conversion of 5.12 mol of solid bismuth to liquid bismuth at 575 K. kJ (c) Will bismuth melt spontaneously at 575 K? (d) At what temperature are solid and...

  • One mole of liquid naphthalene at its freezing point of 80 ˚C is brought into contact...

    One mole of liquid naphthalene at its freezing point of 80 ˚C is brought into contact with a very large ice-water bath, which remains at 0 ˚C as the naphthalene freezes and cools to 0˚C. The enthalpy of fusion of naphthalene is 19.2 kJ mol-1 and ~ C p for solid naphthalene is 180 J K-1 mol-1. Calculate the decrease in entropy for the naphthalene and the increase in entropy for the overall system (naphthalene + ice-water bath).

  • Physical Chemistry Calculate the change in entropy when one mole of metallic aluminum is heated at...

    Physical Chemistry Calculate the change in entropy when one mole of metallic aluminum is heated at one bar pressure from an initial temperature of 25 °C to a final temperature of 750 °C. The molar heat capacities of solid and liquid aluminum at one bar pressure are 29.2 J mol K1 and 31.75 J mol K, respectively. The specific enthalpy of fusion of aluminum at its melting point (660.46 °C) is 396.57 J g1. The molar mass of aluminum is...

  • Calculate the change in entropy when one mole of metallic aluminum is heated at one bar...

    Calculate the change in entropy when one mole of metallic aluminum is heated at one bar pressure from an initial temperature of 25 ℃ to a final temperature of 750 ℃. The molar heat capacities of solid and liquid aluminum at one bar pressure are 29.2 J mol-1 K-1 and 31.75 J mol-1 K-1, respectively. The specific enthalpy of fusion of aluminum at its melting point (660.46 ℃) is 396.57 J g-1. The molar mass of aluminum is 26.98 g...

  • A 1000g sample of solid mercury at its melting point of -39.0C(Celsius) is placed in a...

    A 1000g sample of solid mercury at its melting point of -39.0C(Celsius) is placed in a 220g aluminum calorimeter with 430g of water at temperature of 12.8C. The final equilibrium temperature is 5.1C. From this determine the latent heat of fusion for mercury. Specific heats Mercury 0.138J/g/K aluminum 0.900J/g/K Water 4.186J/g/K

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT