question archive 1) Consider the following balanced redox reaction: 16H+ (aq) + 2MnO4- (aq) + 10Cl- (aq) à2Mn2+ (aq) + 5CI2 (g) + 8H2O (l) (a) Which species is being oxidized? (b) Which species is being reduced? (c) Which species is the oxidizing agent? (d) Which species is the reducing agent? (e) From which species to which does electron transfer occur? 2
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1) Consider the following balanced redox reaction:
16H+ (aq) + 2MnO4- (aq) + 10Cl- (aq) à2Mn2+ (aq) + 5CI2 (g) + 8H2O (l)
(a) Which species is being oxidized? (b) Which species is being reduced? (c) Which species is the oxidizing agent? (d) Which species is the reducing agent? (e) From which species to which does electron transfer occur?
2.) Assign an oxidation number for each element. Also, identify each oxidizing agent and each reducing agent :
(a) 2Fe (s) + 3Cl2 (g) à 2FeCI3 (s)
b) 2C2H6 (g) + 7O2 (g) ? 4CO2 (g) + 6H2O (g)
(c) 5CO (g) + I2O5 (s) ? I2 (s) + 5CO2 (g)
3.) Aqua regia, a mixture of concentrated HNO3 and HCl, was developed by alchemists as a means to "dissolve" gold. The process is actually a redox reaction with the following simplified skeleton reaction
a. Au (s) + NO3- (aq) + Cl- (aq) à AuCl4- (aq) + NO2 (g)
b) Balance the reaction by the half-reaction method.
(c) What are the oxidizing and reducing agents?
(d) What is the function of HCI in aqua regia?