Determine the heat of reaction

In summary, the conversation is about determining the heat of reaction and activation energy for the forward and reverse reactions of CO + NO2 ----> CO2 + NO. The activation energy for the forward reaction is 135 kJ/mol of CO reacted. The website provided has information on calculating the reaction enthalpy.
  • #1
richi
6
0
Can somebody help me with this please?

CO + NO2 ----> CO2 + NO the activation energy for the forward reaction is 135 kJ/mol of CO reacted.
a) determine the heat of reaction
b) fron the data given , and the Delta Hr for the reaction , determine the activation energy for the reverse reaction.

Thanks
 
Physics news on Phys.org
  • #2
Do you have any ideas about the problem? Do you remember Kinetics and flipping equations and what was involved there?
 
  • #3
Stevedye56 said:
Do you have any ideas about the problem? Do you remember Kinetics and flipping equations and what was involved there?

I know the molecules in the reaction need 135kJ to start the reaction. But when determining heat of reaction, the number is not even close to 135 kJ.
 
  • #4
This site has some good information on calculating the reaction enthalpy. http://www.science.uwaterloo.ca/~cchieh/cact/c120/heatreac.html
 
  • #5
richi said:
I know the molecules in the reaction need 135kJ to start the reaction. But when determining heat of reaction, the number is not even close to 135 kJ.

Thanks it is helpful.
 

What is the heat of reaction?

The heat of reaction, also known as enthalpy of reaction, is the amount of heat released or absorbed during a chemical reaction. It is a measure of the energy change that occurs as reactants are converted into products.

How is the heat of reaction determined?

The heat of reaction is determined by measuring the temperature change of the reacting system using a calorimeter. The temperature change is then used in the equation Q = mcΔT, where Q is the heat transferred, m is the mass of the reacting system, c is the specific heat capacity, and ΔT is the change in temperature.

What factors affect the heat of reaction?

The heat of reaction is affected by the nature of the reactants and products, the amount of substance involved, and the temperature and pressure of the reaction. Catalysts and inhibitors can also affect the heat of reaction by altering the rate of the reaction.

What is an exothermic reaction?

An exothermic reaction is a chemical reaction that releases heat into the surroundings. This results in an increase in temperature of the surrounding environment. Examples of exothermic reactions include combustion, neutralization, and oxidation.

What is an endothermic reaction?

An endothermic reaction is a chemical reaction that absorbs heat from the surroundings. This results in a decrease in temperature of the surrounding environment. Examples of endothermic reactions include photosynthesis, melting, and evaporation.

Similar threads

  • Biology and Chemistry Homework Help
Replies
3
Views
5K
  • Biology and Chemistry Homework Help
Replies
3
Views
1K
  • Biology and Chemistry Homework Help
Replies
6
Views
1K
  • Thermodynamics
Replies
4
Views
883
  • Biology and Chemistry Homework Help
Replies
5
Views
2K
  • Biology and Chemistry Homework Help
Replies
7
Views
2K
  • Engineering and Comp Sci Homework Help
Replies
6
Views
661
  • Biology and Chemistry Homework Help
Replies
2
Views
1K
  • Biology and Chemistry Homework Help
Replies
1
Views
3K
  • Biology and Chemistry Homework Help
Replies
2
Views
990
Back
Top