Determine the signs of ∆H, ∆G, ∆S for the reaction: N2(g) → 2N(g)

Thread starter aquastor
Start date Apr 10, 2023
Tags

Reaction Thermodaynamics

AI Thread Summary

The discussion focuses on determining the signs of ΔH, ΔG, and ΔS for the reaction N2(g) → 2N(g). Participants note that there is no phase change, temperature, or volume change, complicating the analysis. The presence of diatomic nitrogen (N2) in nature suggests that the reaction is not spontaneous, indicating a positive ΔG. The breakdown of N2 into atomic nitrogen (N) is endothermic, leading to a positive ΔH. Overall, the reaction is characterized by an increase in entropy, resulting in a positive ΔS.

Apr 10, 2023

aquastor

Homework Statement: Determine the signs of ∆H, ∆G, ∆S for the reaction: N2(g) → 2N(g) Assume standard conditions and temperature = 25 oC

Relevant Equations: ∆G=∆H-T∆S

Hello are you able to explain the two incorrect ones. I am not sure how to do this as there is no phase change involved, nor is there a temperature or volume change.

Physics news on Phys.org

Apr 12, 2023

DrClaude

Mentor

Which form of nitrogen do you find in nature? What does that tell you about the ΔG of the given reaction?

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .

View full post »

Thread 'Correct statement about a reservoir with an outlet pipe'

The answer to this question is statements (ii) and (iv) are correct. (i) This is FALSE because the speed of water in the tap is greater than speed at the water surface (ii) I don't even understand this statement. What does the "seal" part have to do with water flowing out? Won't the water still flow out through the tap until the tank is empty whether the reservoir is sealed or not? (iii) In my opinion, this statement would be correct. Increasing the gravitational potential energy of the...

View full post »

Thread 'A bead-mass oscillatory system problem'

I can't figure out how to find the velocity of the particle at 37 degrees. Basically the bead moves with velocity towards right let's call it v1. The particle moves with some velocity v2. In frame of the bead, the particle is performing circular motion. So v of particle wrt bead would be perpendicular to the string. But how would I find the velocity of particle in ground frame? I tried using vectors to figure it out and the angle is coming out to be extremely long. One equation is by work...

View full post »