1 The following information is given forethanol, C2H5OH, at 1 atm:boiling point = 78.4 Hvap(78.4 °C) =°C38.6 kJ/molmelting point = -115 Hfus(-115 °C) =°C5.02 kJ/molspecific heat liquid =2.46 J/g°CAt a pressure of 1 atm, __kJ of heat areneeded to vaporize a 28.0 g sample ofliquid ethanol at its normal boiling point of78.4 °C.

The mass of the ethanol sample is = 28.0 g The boiling point of ethanol is = 78.4oC The atmospheric…

Answered: The following information is given for…

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter9: Liquids And Solids

Section: Chapter Questions

Problem 75QAP: The following data are given for CC14:...

See similar textbooks

Similar questions

When I mole of benzene is vaporized at a constant pressure of 1.00 atm and at its boiling point of 353.0 K, 30.79 kJ of energy (heat) is absorbed and the volume change is +28.90 L. What are E and H for this process?
A 0.250-g chunk of sodium metal is cautiously dropped into a mixture of 50.0 g water and 50.0 g ice, both at 0C. The reaction is 2Na(s)+2H2O(l)2NaOH(aq)+H2(g)H=368kJ Assuming no heat loss to the surroundings, will the ice melt? Assuming the final mixture has a specific heat capacity of 4.18 J/gc, calculate the final temperature. The enthalpy of fusion for ice is 6.02 kJ/mol.
How much heat is required to convert 422 g of liquid H2O at 23.5 C into steam at 150 C?
Liquid butane, C4H10, is stored in cylinders to be used as a fuel. Suppose 35.5 g of butane gas is removed from a cylinder. How much heat must be provided to vaporize this much gas? The heat of vaporization of butane is 21.3 kJ/mol.
The enthalpy of vaporization of liquid mercury is 59.11 kJ/mol. What quantity of energy as heat is required to vaporize 0.500 mL of mercury at 357 C, its normal boiling point? The density of mercury is 13.6 g/mL.
The following data are given for CC14: normalmeltingpoint=23Cnormalboilingpoint=77Cdensityofliquid=1.59g/mLvaporpressureat25C=110mmHg How much heat is required to vaporize 20.0 L of CCl4 at its normal boiling point?
What is U when 1.00 mol of liquid water vaporizes at 100C? The heat of vaporization, Hvap, of water at 100C is 40.66 kJ/mol.
What quantity of energy does it take to convert 0.500 kg ice at 20.C to steam at 250.C? Specific heat capacities: ice, 2.03 J/g C; liquid, 4.2 J/g . C; steam, 2.0 J/g C; Hvap = 40.7 kJ/mol; Hfus = 6.02 kJ/mol.
Why are steam burns so much worse than water burns even if the H2O is at the same temperature for both phases? Hint: Consider the heat of vaporization of water.
The enthalpy of vaporization of water is larger than its enthalpy of fusion. Explain why.

Recommended textbooks for you

Chemistry: Principles and Reactions

Chemistry

ISBN:

9781305079373

Author:

William L. Masterton, Cecile N. Hurley

Publisher:

Cengage Learning

Chemistry

ISBN:

9781305957404

Author:

Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:

Cengage Learning

Chemistry: An Atoms First Approach

Chemistry

ISBN:

9781305079243

Author:

Steven S. Zumdahl, Susan A. Zumdahl

Publisher:

Cengage Learning

Chemistry: Principles and Reactions

Chemistry

ISBN:

9781305079373

Author:

William L. Masterton, Cecile N. Hurley

Publisher:

Cengage Learning

Chemistry

ISBN:

9781305957404

Author:

Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:

Cengage Learning

Chemistry: An Atoms First Approach

Chemistry

ISBN:

9781305079243

Author:

Steven S. Zumdahl, Susan A. Zumdahl

Publisher:

Cengage Learning

Chemistry

ISBN:

9781133611097

Author:

Steven S. Zumdahl

Publisher:

Cengage Learning

Chemistry: The Molecular Science

Chemistry

ISBN:

9781285199047

Author:

John W. Moore, Conrad L. Stanitski

Publisher:

Cengage Learning

Chemistry & Chemical Reactivity

Chemistry

ISBN:

9781133949640

Author:

John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS