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

Reflection problem , 2 upright plane mirrors are 4 meters apart and facing ...

2 upright plane mirrors are 4 meters apart and facing each other. A man stands 1 meter in front of them. Determine the distance between the second images in the mirror

Evaluate the volume of the bubble, Evaluate the volume of the bubble A d...

Evaluate the volume of the bubble A diver releases an air bubble of volume 2.7cm 3  from a depth of 17 below the surface of a lake, where the temperature is 8.0°C. What is the v

Concept of Speed, KINEMATICS I 1.   x(t) is called displacement and i...

KINEMATICS I 1.   x(t) is called displacement and it denotes the position of the body at a particular time. If the displacement is positive then that body is to the right of

Ultrasonics, explain briefly about piezoelectric effect to produce ultrason...

explain briefly about piezoelectric effect to produce ultrasonics

Describe the michelson morleys experiment, Describe the Michelson Morley's ...

Describe the Michelson Morley's experiment and explain its negative result. What is "Length Contraction" and "Time Dilation" in relativistic mechanics? Explain.

Determine phase of vibration of two vibrating particles, Two vibrating part...

Two vibrating particles that are "out of phase" differ in the phase of their vibration by: a) 1/4 cycle b) 1/2 cycle c) 3/4 cycle d) 1 cycle Ans: Two vibra

Obtain relativistic expression for the kinetic energy, Obtain Relativistic ...

Obtain Relativistic expression for the kinetic energy of the particle.

Gray, Gray; Gy (after L.H. Gray, 1905-1965): The derived SI unit of ab...

Gray; Gy (after L.H. Gray, 1905-1965): The derived SI unit of absorbed dose, described as the absorbed dose wherein the energy per unit mass imparted to the matter through ion

Packing fraction in nuclear physics, what is the physical signification of ...

what is the physical signification of packing fraction in nuclear physics?

Na+ ion is isoelectronic with, Na + ion is isoelectronic with: (1) Li ...

Na + ion is isoelectronic with: (1) Li +                     (2)  Mg +2               (3) Ca +2                                (4) Ba +2 Ans:(b) Mg +2

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