Question

Write net ionic equations for the cases where oxidation-reduction reactions between metals and metallic ions were observed. (Be sure you balance the reaction so that the electrons balance.)

Copper in silver sulfate, zinc in silver sulfate, magnesium in silver sulfate, zinc in copper sulfate, magnesium in copper sulfate, magnesium in zinc sulfate.

Answer 1

1 ) Copper in silver sulfate

Cu (s) + 2 Ag+ (aq) ------------------------> Cu+2 (aq) + 2Ag (s)

explanation :

anode reaction: oxidation takes place

Cu(s) -------------------------> Cu+2 (aq) + 2e-   ,   E⁰_Cu+2/Cu = + 0.34 V

cathode reaction : reduction takes palce

2Ag+(aq) + 2e- -----------------------------> 2 Ag (s) , E⁰_Ag+/Ag = +0.80 V

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net reaction: Cu(s) +2Ag+(aq) -------------------------> Cu+2 (aq) + 2 Ag (s)

note 1: low reduction potential metal can act as anode and high reduction potential metal can act as cathode.

note 2 : similarly apply explanation for all above reactions . just i will write what you asked

2) zinc in silver sulfate

Zn (s) + 2 Ag+ (aq) ---------------------> Zn+2 (aq) + 2 Ag (s)

3 ) magnesium in silver sulfate

Mg (s) + 2 Ag+ (aq) -------------------> Mg+2 (aq) + 2 Ag (s)

4) zinc in coppersulfate

Zn (s) + Cu+2 (aq) -------------------> Zn+2 (aq) + Cu (s)

5) magnesium in copper sulfate

Mg (s) + Cu+2 (aq) -------------------> Mg+2 (aq) + Cu (s)

6) magnesium in zinc sulfate

Mg (s) + Zn+2 (aq) -------------------> Mg+2 (aq) + Zn (s)