Question

An acid (such as H2SO4) and a base (such as NaOH) are mixed together during a titration. The equivalence point is reached when _____.
the number of moles of H+ ions equals the number of moles of OH– ions
the pH reaches its maximum value
the pH reaches its minimum value
the number of moles of acid equals the number of moles of base

Answer 1

A strong acid (i.e H2SO4) and a strong base (i.e NaOH) mixed together during a titration mixed together reaches equivalence point when the number of moles of H+ ions equals the number of moles of OH– ions. In the equivalence points, chemical change occurs as stoichiometric ratios are achieved. 

Answer 2

the number of moles of H+ ions equals the number of moles of OH– ions