Entropy of Formation: Magnesium & Oxygen

  • Thread starter Thread starter explore88
  • Start date Start date
  • Tags Tags
    Entropy Formation
Click For Summary
The discussion centers on calculating the entropic energy change when 25 grams of magnesium is burned in excess oxygen at 25 degrees Celsius. The standard entropy of formation values provided are 32.7 J/mol·K for magnesium, 205.2 J/mol·K for oxygen gas, and 26.9 J/mol·K for magnesium oxide. To find the entropic energy change, the entropies of the reactants and products must be compared. The process involves determining the moles of magnesium burned, calculating the total entropy change using the standard entropies, and applying the formula for entropy change in a reaction. The discussion also addresses whether the burning of magnesium in oxygen results in an increase or decrease in entropy within the system. Generally, combustion reactions tend to increase the overall entropy due to the production of gas and the dispersal of energy. The request for a step-by-step solution indicates a need for clarity in the calculations and reasoning behind the entropy changes.
explore88
Messages
2
Reaction score
0
the standard entropy of formation of magnesium is 32.7 J/mol k , That of oxygen gases 205.2 J/mol k

at that magnesium oxide is 26.9 J/mol k .

A) What is the entropic energy change when 25 grams of magnesium are burned inexcess oxygen at 25 celsius ??

B) Does the burning of magnesium in oxygen lead to increase or decrease in entropy in the system ??

I hope the solution step by step ..

regards ^_^ ..
 
Chemistry news on Phys.org
You should probably go post this in the homework section.
 

Similar threads

What Is the Entropic Energy Change When Magnesium Burns in Oxygen?
  • · Replies 2 ·
Replies
2
Views
7K
Chemistry homework help with enthelpy
  • · Replies 3 ·
Replies
3
Views
2K
Entropy & Gasoline HW: Answer & Explanation
  • · Replies 6 ·
Replies
6
Views
7K
Entropy of molten lead freezing
  • · Replies 2 ·
Replies
2
Views
2K
Is the Moon responsible for reducing Earth's entropy and making life possible?
  • · Replies 1 ·
Replies
1
Views
3K
Chemically regenerating my auto's catalytic converter?
  • · Replies 19 ·
Replies
19
Views
8K
Energy balance on metallurgical furnace
  • · Replies 5 ·
Replies
5
Views
3K
Several Old Exam Questions. (Mechanics and thermodynamics)
  • · Replies 3 ·
Replies
3
Views
10K
Second Law of Thermodynamics - Entropy
  • · Replies 1 ·
Replies
1
Views
4K
Irreversible adiabatic reaction
  • · Replies 1 ·
Replies
1
Views
7K