Respuesta :
Single replacement to me means one ion from a species is swapped with one ion from the other species, the The Potassium Hydroxide and HydroChloric acid reaction is the only reaction mentioned like this so that would be the last one.
The example of a single replacement reaction is as follows: Cu + 2AgNO3 → 2Ag + Cu(NO3)2. Details about single replacement reaction can be found below.
What is a single replacement reaction?
A single replacement reaction is a reaction that involves the displacement of only one element by another element.
In the reaction between copper and silver nitrate as follows: Cu + 2AgNO3 → 2Ag + Cu(NO3)2
Copper displaces silver to form copper nitrate, hence, it can be said to be an example of a single replacement reaction.
Learn more about single replacement reaction at: https://brainly.com/question/13903783
#SPJ5