Final answer:
The chemical formula for the ionic compound formed between Al³⁺ and C₂H₃O₂⁻ is Al(C₂H₃O₂)₃.
Step-by-step explanation:
The student asked to predict the chemical formula for the ionic compound formed by Al3+ (aluminum ion) and C2H3O2− (acetate ion). When combining these two ions, the goal is to balance the total positive charge with the total negative charge to create a neutral compound. The aluminum ion has a +3 charge, and the acetate ion has a -1 charge. To balance the charges, you would need three acetate ions for every aluminum ion to create a neutral compound.
Therefore, the chemical formula for the ionic compound formed between Al3+ and C2H3O2− is Al(C2H3O2)3.