Entropy of Formation: Magnesium & Oxygen

In summary, the entropy of formation is a thermodynamic property that measures the amount of disorder in a chemical system at a given temperature and pressure. It is calculated by taking the difference between the entropy of the products and reactants in a chemical reaction at standard conditions. For the formation of magnesium and oxygen, the entropy of formation is important in determining the stability and feasibility of the reaction. Factors such as temperature, pressure, and physical state can affect the entropy of formation, as well as the presence of impurities or contaminants. Compared to other elements, the entropy of formation for magnesium and oxygen is relatively low due to their lower atomic masses and fewer possible configurations of atoms.
  • #1
explore88
2
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 ^_^ ..
 
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  • #2
You should probably go post this in the homework section.
 

FAQ: Entropy of Formation: Magnesium & Oxygen

What is the definition of entropy of formation?

The entropy of formation is a thermodynamic property that describes the amount of disorder or randomness in a chemical system at a given temperature and pressure.

How is the entropy of formation calculated?

The entropy of formation is calculated by taking the difference between the entropy of the products and the reactants in a chemical reaction at standard conditions. This value is usually given in units of joules per mole per Kelvin (J/mol*K).

Why is the entropy of formation important for the formation of magnesium and oxygen?

The entropy of formation is important for the formation of magnesium and oxygen because it helps to determine the stability and feasibility of the reaction. A positive entropy of formation indicates that the reaction is spontaneous and will proceed in the forward direction, while a negative entropy of formation suggests that the reaction is non-spontaneous and will not occur under standard conditions.

What factors can affect the entropy of formation for magnesium and oxygen?

The temperature, pressure, and physical state of the reactants and products can all affect the entropy of formation for magnesium and oxygen. Additionally, the presence of any impurities or contaminants can also influence the entropy of formation.

How does the entropy of formation of magnesium and oxygen compare to other elements?

The entropy of formation for magnesium and oxygen is relatively low compared to other elements, such as carbon or hydrogen. This is because magnesium and oxygen have relatively low atomic masses and fewer possible configurations of their atoms, resulting in lower degrees of disorder or randomness in their formation.

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