Final answer:
The resulting solution from the reaction of 2 moles of HCl with 1 mole of Ca(OH)2 contains mainly calcium chloride and water due to the complete neutralization reaction between the acid and the base.
Step-by-step explanation:
When an aqueous solution of HCl is mixed with an aqueous solution of Ca(OH)2, a neutralization reaction occurs. This reaction typically produces water and a salt. Since you have 2 moles of HCl for every 1 mole of Ca(OH)2, the balanced chemical equation for this reaction is:
2HCl(aq) + Ca(OH)2(aq) → CaCl2(aq) + 2H2O(l)
Based on the stoichiometry of the balanced equation, the 2 moles of HCl will fully react with the 1 mole of Ca(OH)2 to form water and calcium chloride. Calcium hydroxide is soluble in water but given that it reacts with HCl in this scenario, it will not be present in any significant amount in the final solution. Therefore, the resulting solution contains mainly calcium chloride and water.