What is the relationship between NaOH and HCl at the endpoint, and how does this determine the amount of CaCO3?
A) NaOH and HCl react to form water and salt. The amount of CaCO3 is determined by the remaining concentration of the limiting reagent.
B) NaOH and HCl neutralize each other at the endpoint, indicating that the reaction has reached completion. The amount of CaCO3 is determined by the volume of HCl required.
C) NaOH and HCl form a precipitate with CaCO3 at the endpoint, indicating that the reaction has reached completion. The amount of CaCO3 is determined by the mass of the precipitate formed.
D) NaOH and HCl react with CaCO3 at the endpoint, forming a salt. The amount of CaCO3 is determined by the moles of NaOH and HCl reacted.
