Question

Write the chemical formula for the anion present in the aqueous solution of Pb(C2H3O2)2

Answer 1

Answer: The anion in the given formula is $CH_3COO^-$

Explanation:

Anion is the ion having negative charge. This is formed when an atom gains electrons.

The given compound is formed by the combination of lead ion and acetate ion.

Lead is the 82th element of the periodic table. The electronic confguration for this element is $[Xe]4f^{14}5d^{10}6s^26p^2$

This element will loose 2 electrons and thus will form $Pb^{2+}$ ion

Acetate ion is the polyatomic ion having chemical formula of $CH_3COO^-$ . This ion carries a charge of -1 unit.

By using criss-cross method, the oxidation state of the ions are exchanged and it forms the subscript of the other ions. This results in the formation of a neutral compound.

Hence, the anion in the given formula is $CH_3COO^-$

Answer 2

Pb(C₂H₃O₂)₂ is lead(II) acetate

Pb(C₂H₃O₂)₂ --> Pb²⁺ + C₂H₃O₂²⁻

Lead(II) acetate ionizes in aqueous solution to form lead cation and acetate anion.

The chemical formula for the anion present in the aqueous solution of Pb(C₂H₃O₂)₂ is C₂H₃O₂²⁻

C₂H₃O₂²⁻ or CH₃COO⁻ is called the acetate ion.

Therefore, the correct answer is C₂H₃O₂²⁻