10 or 30 grams
hope this help you
Answer: C excess reactant
Reason: It is not catalyst because catalyst are not consumed. It is not product because it was one of the reactants. It is not limiting because there was excess left over.
Hydronium ions are basically H+ ions.
So if [OH-]>[H+]
This means that the substance is more basic.
and basic substances a pH>7.
Therefore a possible pH value would be 10.