Question

1) When aqueous solutions of copper(II) iodide and potassium carbonate are combined, solid copper(II) carbonate and a solution of potassium iodide are formed. The net ionic equation for this reaction is:

2) When aqueous solutions of sodium cyanide and hydrobromic acid are mixed, an aqueous solution of sodium bromide and hydrocyanic acid results. Write the net ionic equation for the reaction.

3) When solid Zn metal is put into an aqueous solution of NiSO₄, solid Ni metal and a solution of ZnSO₄ result. Write the net ionic equation for the reaction.

Answer 1

1) Molecular equation: CU IZ caq) + K2CO3(aq) → Cu Loz (s) + 2 KJ (29) Ionie equation: .+ Cuz? can cucuz (s) + 216 caal +217602 cu?tcaq) + 27% Net ionic equation: (4L03 (5) Cu2+ (aq) + Cup ²(aq) Molecular equation: Naln(aq) + HBr (aq) - 2) - Net NaBr (aq) + HEN(aq) Ionie equation: - Nat cop) + cw/109) + H7 fuq) + Br Yous → Na loq) + Br (9) +H+ (aq) + (n yaq) +Ht ca 3) Molecular equation: Zn (s) + Nisou (aq) - Ni' (s) + Zn soy laq) Inic equation: znis) + Ni2+ (aq) + Soy2ycon) → Ni (s) + 2424 (aq) + soyaalaa) Net imie equation: + Zn(s) + Nizcaq) - Nils) + zn**aq)