Answer
a) Is Redox , oxidizing agent = Ag+ , Reducing agent = Cu , Substance oxidized = Cu , Substance reduced = Ag+
b) Is NOT Redox
c) Is NOT Redox
d) Is Redox , oxidizing agent = SiCl4 , Reducing agent = Mg , Substance oxidized = Mg , Substance reduced = SiCl4 (Si)
e) Is NOT Redox
*In b, c, and e, no oxidation numbers change.*
Work Step by Step
To ascertain whether the reaction qualifies as an oxidation-reduction (redox) reaction, it's necessary to assign oxidation states to the elements involved. If the oxidation states change for certain elements, the reaction is categorized as a redox reaction. Conversely, if the oxidation states remain constant, the reaction is not considered a redox reaction. In redox reactions, the species undergoing oxidation (known as the reducing agent) experiences an increase in oxidation states, while the species undergoing reduction (known as the oxidizing agent) undergoes a decrease in oxidation states.
a) Is Redox , oxidizing agent = Ag+ , Reducing agent = Cu , Substance oxidized = Cu , Substance reduced = Ag+
b) Is NOT Redox
c) Is NOT Redox
d) Is Redox , oxidizing agent = SiCl4 , Reducing agent = Mg , Substance oxidized = Mg , Substance reduced = SiCl4 (Si)
e) Is NOT Redox
*In b, c, and e, no oxidation numbers change.*
