Complete and balance each of the following equations for acid-base reactions. Express your answer as a chemical equation. Identify all of the phases in your answer.
1) H2SO4 (aq) + Ca(OH)2 (aq) -->
2) HClO4 (aq) + KOH (aq) -->
3) H2SO4 (aq) + NaOH (aq) -->