Enthelpy of combustion of ethane

  • Thread starter Thread starter nevada2012
  • Start date Start date
  • Tags Tags
    Combustion
Click For Summary
SUMMARY

The discussion centers on calculating the enthalpy of formation of ethane (C2H6) using its enthalpy of combustion, which is -2840 kJ. Participants reference the standard enthalpy of formation values for water (H2O) at -286 kJ/mol and carbon dioxide (CO2) at -394 kJ/mol. The initial calculation presented by a user is incorrect, and they seek clarification on the proper method, including the necessity of writing the reaction equation.

PREREQUISITES
  • Understanding of thermodynamics and enthalpy concepts
  • Familiarity with enthalpy of combustion and formation
  • Knowledge of chemical reaction equations
  • Basic skills in stoichiometry
NEXT STEPS
  • Study the calculation of enthalpy changes using Hess's Law
  • Learn how to write and balance chemical reaction equations
  • Explore the concept of standard enthalpy of formation in detail
  • Review examples of enthalpy of combustion calculations
USEFUL FOR

Chemistry students, educators, and professionals involved in thermodynamics and chemical engineering who are looking to deepen their understanding of enthalpy calculations.

nevada2012
Messages
3
Reaction score
0
hey guys i am having a really hard time doing enthalpy problems,

i am trying to do this(its not an homework question)


Calculate the enthalpy of formation of ethane (C2H6) given that the enthalpy of combustion of ethane is
-2840kj. DeltaHfH2O(1) = -286 kg/mol Delta HfCO2 (g) =-394 kg/per

is the answer -206?

this is what i did

-286 X -2840/-394


if not can you please give me step by step
 
Chemistry news on Phys.org


shouln't you first write out the reaction-equation ??
I wonder which textbook you are using ??
 

Similar threads

What is the heat of combustion of 1 kg carbon dioxide w/ magnesium?
  • · Replies 2 ·
Replies
2
Views
2K
Chemistry Does Combusting Different Amounts of Propane Change Final Temperature?
  • · Replies 5 ·
Replies
5
Views
2K
Can the heat of combustion only be found experimentally?
  • · Replies 12 ·
Replies
12
Views
3K
How can I calculate heat of combustion and enthalpy using Hess's Law?
  • · Replies 4 ·
Replies
4
Views
3K
Chemistry Understanding the calculation of enthalpy of the formation of benzene
  • · Replies 3 ·
Replies
3
Views
3K
Is Decane a Viable Alternative to Octane for Engine Combustion?
  • · Replies 6 ·
Replies
6
Views
6K
Enthelpy of Formation of Tetraoxygen
  • · Replies 4 ·
Replies
4
Views
3K
Calculate the change in entropy for the system and the surroundings
  • · Replies 13 ·
Replies
13
Views
4K
How do I calculate the enthelpy of formation using combusion data
  • · Replies 9 ·
Replies
9
Views
6K
Combustion calculations and the required amount of air
  • · Replies 2 ·
Replies
2
Views
11K