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1 Redox reactions may involve the transfer of electrons between chemical species. 2  The reaction that occurs when In which I 2 is reduced to I-and S 2 O 3 2- (thiosulfate anion) is oxidized to S 4 O 6 2- provides an example of a redox reaction :
Lesson Summary. Let's review. A double displacement reaction, also known as a double replacement reaction or metathesis reaction, is a type of reaction that occurs when the cations and anions switch between two reactants to form new products.esson Summary. Let's review. A double displacement reaction, also known as a double replacement reaction or metathesis reaction, is a type of reaction that occurs when the cations and anions switch between two reactants to form new products.