Calculate the standard molar enthalpy, Physics

Assignment Help:

(a) Using the thermochemical tables provided, calculate the standard molar enthalpy of combustion at 298 K for the following hydrocarbon:  C C2H4 (g ) (ethene) 

(b)  If a combustion reaction were carried out in a bomb calorimeter using 55g of your compound, what would be the amount of heat released?       

(c)  Estimate the standard molar enthalpy of combustion of the compound used in part (a), at  a temperature of 376.9K, given the following molar heat capacities:                            

 

Cp,m/ J K-1 mol-1

 

A C3H8 (g)

73.5

B C4H10 (g )

97.5

C C2H4 (g )

43.6

D C3H6 (g )

63.9

EC4H8 (g )

85.7

O2 (g)

29.4

CO2 (g)

37.1

H2O (l)

75.3

What assumption has been made in your calculation?

(d)   From the mean bond enthalpy data given below, estimate the enthalpy change for the complete combustion of  one mole of  your compound at 298 K.  (The molar enthalpy of vaporization of water is 45.0 kJ mol-1 at 298K).

Bond

C-H

O=O

O-H

C=O

C-C

C=C

 Mean bond enthalpy/kJmol-1

414

499

460

799

347

612

 (e) Comment on your answers to parts (a) and (d). 


Related Discussions:- Calculate the standard molar enthalpy

Physics Project - Black Holes, I really just need an interview with someone...

I really just need an interview with someone (it''s a total of nine questions). I have had trouble getting responses and I''m getting desperate about making my deadline. I will als

How can time delay between the different modes be reduced, How can time del...

How can time delay between the different modes be reduced? The time delay between the various modes can be reduced when (a) the rays traveling off axis to the fiber are spee

What seven colors appear to be white when mixed together, What seven colors...

What seven colors appear to be white when mixed together? a) Red, b) orange, c) yellow, d) green, e) blue, f) indigo and g) violet. Though with the human e

Project, comparison of magnetic moments using an vibrational magnetometer

comparison of magnetic moments using an vibrational magnetometer

What are those two types of fields, Electromagnetic radiation a.k.a. light ...

Electromagnetic radiation a.k.a. light contains of two kinds of fields each produced by the changing of the other. What are those two types of fields?

Determine the elapsed time in kinematics, Q. Determine the elapsed time in ...

Q. Determine the elapsed time in kinematics? Let S = 1 + c 2 + c 4 + ........  Then, S = 1 + c 2 (1 + c 2 + c 4 +.......... ) S = 1 + c 2 S    so, S - c 2 S = 1

what percentage should the pressure of a given mass, By what percentage sh...

By what percentage should the pressure of a given mass of gas be increased,so as to decrease its volume  by 10% at a constant temperature.

What is surface energy, The free surface of a liquid always has a tendency ...

The free surface of a liquid always has a tendency to contract and possess minimum surface area. If we want to enhance the surface area of the liquid, work has to be done. This wor

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd