Calculate Heat in Combustion of C4H10(g)

  • Thread starter Thread starter needhelp83
  • Start date Start date
  • Tags Tags
    Combustion Heat
Click For Summary
SUMMARY

The complete combustion of 1.325 g of C4H10 (butane) at 23.6 degrees Celsius and 738 mmHg releases 2877 kJ of heat, as indicated by the enthalpy change (ΔH) for the reaction. The combustion reaction can be represented as C4H10(g) + 13/2 O2(g) → 4CO2(g) + 5H2O(l). To calculate the heat evolved, one must first determine the number of moles of butane present in the given mass, which is essential for applying the enthalpy value correctly.

PREREQUISITES
  • Understanding of stoichiometry and mole calculations
  • Familiarity with thermodynamics concepts, specifically enthalpy
  • Knowledge of gas laws and conditions (temperature and pressure)
  • Basic chemistry knowledge regarding combustion reactions
NEXT STEPS
  • Calculate the number of moles of C4H10 using its molar mass
  • Learn about the concept of enthalpy and its significance in chemical reactions
  • Explore the ideal gas law to understand the behavior of gases under different conditions
  • Study the complete combustion of hydrocarbons and their energy outputs
USEFUL FOR

Chemistry students, educators, and professionals involved in thermodynamics or combustion analysis will benefit from this discussion.

needhelp83
Messages
193
Reaction score
0
How much heat, in kilojoules, is evolved in the complete combustion of 1.325 g C4H10(g) at 23.6 degrees Celsius and 738 mmHg? The complete combustion of butane is represented by this equation

C4H10(g) + \frac{13}{2} O2(g)\rightarrow 4CO2(g) + 5H2O(l)
\DeltaH degrees Celsius = -2877 kJ

I am not sure at all how to do this and this is something we went over very briefly in class without any examples, so any help would be greatly appreciated.
 
Physics news on Phys.org
You were given the heat of enthalpy of...?

What does the heat of enthalpy mean anyway?

How much butane do you have to start with?
 

Similar threads

Determining Heat of Formation of n-Butane
  • · Replies 5 ·
Replies
5
Views
5K
1. Burning butane (C4H10) produces gaseous carbon dioxide and water.
  • · Replies 2 ·
Replies
2
Views
19K
Heat of Combustion of N2H4 - Calculating Final Temperature
  • · Replies 10 ·
Replies
10
Views
4K
Help with enthelpy change and Hess's Law
  • · Replies 1 ·
Replies
1
Views
5K
Calculate Mass of Butane & CO2 for 1.5x10^3 kJ Heat
  • · Replies 14 ·
Replies
14
Views
33K
Thermochemical question about the heat of combustion of a hydride
  • · Replies 2 ·
Replies
2
Views
3K
How to Calculate Heat of Combustion and Heat Transfer in a Furnace?
  • · Replies 5 ·
Replies
5
Views
5K
How Does Fuel Composition Affect Combustion Efficiency and Steam Generation?
  • · Replies 9 ·
Replies
9
Views
8K
Max Flame Temp of C4H10 + 4.5O2 -> 4Co2 + 5H2O
  • · Replies 17 ·
Replies
17
Views
5K
Calculate the Flame temperature
  • · Replies 6 ·
Replies
6
Views
4K