Chemistry
Divide the following redox reactions into oxidation and reduction half reactions.
(i) Zn + Pb2+ ⟶ Zn2+ + Pb
(ii) Zn + Cu2+ ⟶ Zn2+ + Cu
(iii) Cl2 + 2Br- ⟶ Br2 + 2Cl-
Related Questions
Name
(a) an oxidizing agent that does not contain oxygen.
(b) a substance that oxidizes concentrated HCl to chlorine.
(c) a substance that will reduce aqueous Iron (III) ions to Iron (II) ions.
(d) a liquid that is an oxidizing as well as a reducing agent.
(e) a gas that is an oxidizing as well as a reducing agent.
(f) a solid that is an oxidizing agent.
Correct the following statements:
(a) Hydrogen is separated from CO by passing the mixture through caustic potash solution.
(b) All metals react with acids to give hydrogen.
(c) Hydrogen is dried by passing it through conc. H2SO4.
(d) Very dilute nitric acid reacts with iron to produce hydrogen.
(e) Conc. H2SO4 reacts with zinc to liberate hydrogen.
(a) Write the equation in the ionic form
CuSO4 (aq) + Fe (s) ⟶ FeSO4 (aq) + Cu (s)
(b) Divide the above equation into oxidation and reduction half reactions.
Select the odd one out and justify your answer.
(a) Zn, Fe, Mg and Na
(b) SO2, H2S, NH3 and CO2
(c) Fe, Zn, Cu and Mg
(d) Fe, Pb, Al and Zn