Answer to Question #345848 in General Chemistry for Meg

Question

For each redox reaction below, determine the oxidation number of each element present. Write your answer above each symbol for the element.

a. 2Sb(s) + 3I2(g) —> 2SbI3(s)

b. 2Cu2S(s) + 3O2(g) —> 2Cu2O(s) + 2SO2(g)

c. PbO2(s) + Pb(s) + 2H2SO4(aq) —> 2PbSO4(aq) + 2H2O(l)

d. NH4NO3(s) —> 2H2O(g) + N2O(g)

e. Fe2O3(s) + 3CO(g) —> 2Fe(s) + 3CO2(g)

Answer 1

a. 2Sb⁰(s) + 3I₂⁰(g) —> 2Sb³⁺I₃^-(s)

b. 2Cu₂⁺S^2-(s) + 3O₂⁰(g) —> 2Cu₂⁺O^2-(s) + 2S⁴⁺O₂^2-(g)

c. Pb⁴⁺O₂^2-(s) + Pb⁰(s) + 2H₂⁺S⁶⁺O₄^2-(aq) —> 2Pb²⁺S⁶⁺O₄^2-(aq) + 2H⁺₂O^2-(l)

d. N^3-H⁺₄N⁺⁵O₃^2-(s) —> 2H⁺₂O^2-(g) + N⁺₂O^2-(g)

e. Fe₂³⁺O₃^2-(s) + 3C²⁺O^2-(g) —> 2Fe⁰(s) + 3C⁴⁺O₂^2-(g)