Text Book Question about spontaneous reactions

Moderators: Chem_Mod, Chem_Admin

Mike Vinci 2B
Posts: 49
Joined: Fri Sep 29, 2017 7:03 am
Been upvoted: 1 time

Text Book Question about spontaneous reactions

Postby Mike Vinci 2B » Mon Jan 29, 2018 3:19 pm

In the first paragraph of chapter 9, the text book mentions that O2 gas and H2 gas can coexist separately, but need a "spark" of energy in order to combine into water. I was wondering how this process can occur naturally in our environment. I thought of the possibility of lightning providing the energy for the two vapors to combine in the atmosphere, or some other form of energy, but I am still confused how water Cana actually help without Human Resources of providing energy.

Andrea ORiordan 1L
Posts: 52
Joined: Fri Sep 29, 2017 7:04 am
Been upvoted: 2 times

Re: Text Book Question about spontaneous reactions

Postby Andrea ORiordan 1L » Mon Jan 29, 2018 3:38 pm

For the most part, oxygen and hydrogen gas do not exist in large enough concentrations near enough to each other in order to react to form water. I believe the textbook is referring to being able to safely store hydrogen and oxygen together without a reaction occurring, unless some outside source of energy overcomes the activation energy. I believe this example is meant to represent that, even though the reaction is spontaneous, it cannot begin without some form of added energy.

Return to “Concepts & Calculations Using Second Law of Thermodynamics”

Who is online

Users browsing this forum: No registered users and 2 guests