Does forming OH- ions in water base solution absorb energy

Click For Summary

Discussion Overview

The discussion centers on the energy dynamics involved in the formation of hydroxide ions (OH-) in aqueous base solutions. Participants explore whether this process is endothermic or exothermic, considering different mechanisms such as base dissociation and water autodissociation.

Discussion Character

  • Exploratory, Debate/contested, Conceptual clarification

Main Points Raised

  • One participant questions whether the formation of OH- ions is specifically due to base dissociation or water autodissociation, suggesting these processes may not be identical.
  • Another participant expresses uncertainty about whether the reaction is endothermic or exothermic, indicating that the answer may depend on the specific base involved.
  • A later reply raises the specific case of ammonia in water, asking if the reaction is endothermic and how to calculate the energy balance for it.
  • There is a request for reliable resources or books to assist in calculating the energy dynamics associated with these reactions.

Areas of Agreement / Disagreement

Participants do not reach a consensus on whether the formation of OH- ions is endothermic or exothermic, with multiple competing views remaining regarding the influence of different bases.

Contextual Notes

The discussion highlights the dependence on specific bases and the potential variability in energy dynamics, but does not resolve the mathematical or conceptual steps involved in calculating energy changes.

sr241
Messages
83
Reaction score
0
does forming OH- ions in water base solution absorb energy ?
How this mechanism works, from stable molecules to unstable ions?
is this reaction endothermic or exothermic?
 
Engineering news on Phys.org
Forming by what? Water autodissociation? Base dissociation? These don't have to be identical.
 
does forming OH- ions in water base solution by "base dissociation" absorb energy?

How this mechanism works, from stable molecules to unstable ions?
is this reaction endothermic or exothermic?
 
sr241 said:
is this reaction endothermic or exothermic?

I don't think there is a single "one size fits all" answer. Most likely it depends on the base. I guess in most cases it is probably exothermic.
 
in case of ammonia water solution is it endothermic? how to calculate energy balance for it?

share me any reliable resources or books for calculating!
 

Similar threads

Replies
0
Views
3K
Replies
9
Views
4K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 9 ·
Replies
9
Views
5K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
Replies
4
Views
2K