Answer:
Hydrogen chloride (HCl) and Calcium hydroxide (CaOH). (see balanced equation below)
Explanation:
In a neutralization reaction as is the case of the question (see attachment), an acid would be neutralized by a base to form salt and water.
The most plausible reactants for the reaction given the number of moles of the product, is therefore Hydrogen chloride (HCl) and Calcium hydroxide (Ca(OH)2).
[tex]HCl _{(aq)} + Ca(OH)_{2} _{(aq)}[/tex] →[tex]CaCl_{2}_{(s)} + H_{2} O_{(l)}[/tex]
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