Entropy of Formation: Magnesium & Oxygen

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SUMMARY

The standard entropy of formation for magnesium is 32.7 J/mol·K, while for oxygen gas, it is 205.2 J/mol·K. The standard entropy of formation for magnesium oxide is 26.9 J/mol·K. When 25 grams of magnesium are burned in excess oxygen at 25 degrees Celsius, the entropic energy change can be calculated using these values. The burning of magnesium in oxygen results in a decrease in entropy within the system due to the formation of a more ordered solid compound from less ordered gaseous reactants.

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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 ^_^ ..
 
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You should probably go post this in the homework section.
 

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