Determine Reaction Spontaneity of Reaction From Entropy of the Universe (∆Sᵤₙᵢᵥₑᵣₛₑ) 001
Channel: Professor Heath's Chemistry Channel
Date: 2013-07-25

At 298 K, the formation of ammonia has a negative ∆S°ₛᵧₛ: 

N₂ (g) + 3N₂ (g) → 2NH₃ (g) ∆S°ₛᵧₛ = -197 J/K. 

Calculate the ∆Sᵤₙᵢᵥₑᵣₛₑ, and state whether the reaction occurs spontaneously at this temperature.

Interviews
1) Revell, K. (November 16, 2016) “An Interview with Heath Giesbrecht, Part I” The Macmillan Community  https://community.macmillan.com/groups/flipped-chemistry/blog/2016/11/17/an-interview-with-heath-giesbrecht-part-1

2) Revell, K. (November 16, 2016) “An Interview with Heath Giesbrecht, Part II” The Macmillan Community   https://community.macmillan.com/groups/flipped-chemistry/blog/2016/11/17/an-interview-with-heath-giesbrecht-part-2