Final answer:
When 2 molar equivalents of HCl are added to a solution of 1,2-diaminoethane, the resulting ionic compound is H3NC2H4Cl-.
Step-by-step explanation:
When 1,2-diaminoethane, H2NCH2CH2NH2, dissolves in water, it forms a basic solution. When 2 molar equivalents of hydrochloric acid (HCl) are added to a solution of 1,2-diaminoethane, the resulting ionic compound is a salt called 1,2-diaminoethanium chloride, or H3NC2H4Cl-.