Question

what is the molecular, ionic, net ionic for :
1) copper ii acetate + hydrosulfuric acid
2) copper ii sulfate + hydrosulfuric acid
3) sulfuric acid + barium hydroxide
state state designations (l, s, aq, g etc)

Answer 1

(1) The balanced molecular equation is

Cu(CH₃COO)₂(aq) + H₂S (aq) ---> CuS(s) + 2CH₃COOH(aq)

Total ionic equation is :

Cu²⁺(aq) + CH₃COO^-(aq) + 2H⁺(aq) + S^2-(aq) ---> CuS(s) + 2CH₃COO^-(aq) + 2H⁺(aq)

Spectator ions are : CH₃COO^-(aq) & H⁺(aq)

After cancelling the spectator ions we get net ionic equation as : Cu2⁺(aq) + S^2-(aq) ---> CuS(s)

(2) The balanced molecular equation is

CuSO₄(aq) + H₂S (aq) ---> CuS(s) + H₂SO₄(aq)

Total ionic equation is :

Cu²⁺(aq) + SO₄^2-(aq) + 2H⁺(aq) + S^2-(aq) ---> CuS(s) + SO₄^2-(aq) + 2H⁺(aq)

Spectator ions are : SO₄^2-(aq) & H⁺(aq)

After cancelling the spectator ions we get net ionic equation as : Cu2⁺(aq) + S^2-(aq) ---> CuS(s)

(3) The balanced molecular equation is

H₂SO₄(aq) + Ba(OH)₂ (aq) ---> BaSO₄(s) + 2H₂O(aq)

Total ionic equation is :

2H⁺(aq)+ SO₄^2-(aq) + Ba²⁺(aq) + 2 OH^-(aq) ---> BaSO₄(s) + 2H₂O(aq)

Spectator ions are : NO

Net ionic equation is : 2H⁺(aq)+ SO₄^2-(aq) + Ba²⁺(aq) + 2 OH^-(aq) ---> BaSO₄(s) + 2H₂O(aq)