Answer:
Explanation:
To neutralize a chemical to a pH of 7 before discarding, one would require a significant amount of acids or bases. Our best guess is that the solution in itself is either an acid or a base. Neutralization with the right amount of a proper reagent can bring the pH of the solution to a neutral 7.
If the solution has a pH originally greater than 7, add a corresponding amount of acid to it. This will reduce the concentration and bring it to a neutral point. Provided one is dealing with a solution of pH less than 7, simply add a base to to bring the solution to neutrality.
Remember, the term pH (or pH value) is a standard measure of the level of acidity/basicity of a chemical solution. The pH value typically ranges from 0 to 14, where a solution with pH 7 is referred to as being neutral. While chemical solutions with pH values greater than 7 are base, meanwhile those lower than 7 indicate acidity.
In this instance, we want the chemical solution to become neutral (ie. to a have pH of 7). Logically this implies that this chemical solution should either be an acid or a base, but not neutral.
Scenario 1:
the chemical solution is a base, i.e it has pH values greater than 7: adding the right amounts of acid to the base should cause a reaction that would make the chemical solution neutral.
Scenario 2:
the chemical solution is an acid, i.e it has a pH lower than 7. In this case, adding the right amounts of a base solution to the acid should make neutrality.
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