Which substance is acting as the acid in the reverse reaction of the acid-base reaction below? 
Definitions:
Failures
Instances or occasions of not achieving a desired or intended outcome, often used to describe unsuccessful attempts in various contexts.
Situation
The set of environmental or circumstantial factors present at a given time and place.
Self-esteem
An individual's subjective evaluation of their own worth or personal value.
Compare
To examine the similarities and/or differences between two or more entities or ideas.
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