已知硫酸鉛不溶于水，也不溶于鹽酸和硝酸，卻可溶于醋酸銨溶液中，形成無(wú)色溶液，其化學(xué)方程式是PbSO₄+2CH₃COONH₄＝(CH₃COO)₂Pb+(NH₄)₂SO₄當(dāng)在(CH₃COO)₂Pb溶液中通入H₂S時(shí)有黑色沉淀產(chǎn)生，則這個(gè)反應(yīng)的離子方程式是

1. A.
   (CH₃COO)₂Pb+H₂S＝PbS↓+2CH₃COOH
2. B.
   Pb²⁺+H₂S＝PbS↓+2H⁺
3. C.
   Pb²⁺+2CH₃COO^-+H₂S＝PbS↓+2CH₃COOH
4. D.
   Pb²⁺+2CH₃COO^-+2H⁺+S^2-＝PbS↓+2CH₃COOH

A.PbAc₂+H₂SPbS↓+2HAc?

B.Pb²⁺+H₂SPbS↓+2H⁺?

C.Pb²⁺+2Ac^-+H₂SPbS↓+2HAc?

D.Pb²⁺+2Ac^-+2H⁺+S^2-PbS↓+2HAc?

A.PbAc₂+H₂SPbS↓+2HAc                     B.Pb²⁺+H₂SPbS↓+2H⁺

C.Pb²⁺+2Ac^-+H₂SPbS↓+2HAc              D.Pb²⁺+2Ac^-+2H⁺+S^2-PbS↓+2HAc