There is no base word in solve. solv is not applicable for this word.
The base word in "solution" is "solve."
I do believe it is "solute."
solut
A buffer
Here is a solution: bush bash base bare fare fire
A base solution releases OH- and the positive radical of the base.
Adding a base
Rain - drain
The base word for "solution" is "solv," derived from the Latin "solvere," which means "to loosen or to solve." This root is also seen in other words like "solve" and "solvable." The suffix "-tion" indicates the process or result of an action, transforming the base word into a noun that refers to the outcome of solving a problem.
The word is "salt." When an acid reacts with a base (alkali), a neutralization reaction occurs, forming a salt and water.
A base in solution will produce hydroxide or OH- ions.