Problem: Our atmosphere is composed primarily of nitrogen and oxygen, which coexist at 25 ˚C without reacting to any significant extent. However, the two gases can react to form nitrogen monoxide according to the following reaction: N2(g) + O2(g) ⇌ 2 NO(g).Estimate ΔG˚ at 2010 K{ m { m K}}.

🤓 Based on our data, we think this question is relevant for Professor Ritchie's class at OLE MISS.

FREE Expert Solution

Use the equation:

G° = H°-TS°

(1) Calculating ΔH° 

ΔH°rxn=ΔH°f, prod-ΔH°f, react

H° = 2Hf°(NO)-[Hf°(N2)+Hf°(O2)]H° = 2(91.3) kJ-[0+0]

ΔH° =  182.6 kJ


(2)Calculating ΔS° 

ΔS°rxn=ΔS°f, prod-ΔS°f, react

S° = 2Sf°(NO)-[Sf°(N2)+Sf°(O2)]S° = 2(210.8)JK-[191.6+205.2] JK

View Complete Written Solution
Problem Details

Our atmosphere is composed primarily of nitrogen and oxygen, which coexist at 25 ˚C without reacting to any significant extent. However, the two gases can react to form nitrogen monoxide according to the following reaction: N2(g) + O2(g) ⇌ 2 NO(g).

Estimate ΔG˚ at 2010 K.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Gibbs Free Energy concept. You can view video lessons to learn Gibbs Free Energy. Or if you need more Gibbs Free Energy practice, you can also practice Gibbs Free Energy practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Ritchie's class at OLE MISS.