Redox Reactions in Terms of Electron Transfer

The video tutorial explains redox processes, where reductants transfer electrons to oxidants, leading to oxidation and reduction reactions. It introduces mnemonics LEO and GER to remember oxidation and reduction, respectively. The formation of sodium chloride is discussed as a redox reaction. Various examples, including zinc and copper sulfate, illustrate electron transfer. The video also covers oxidizing and reducing agents, and concludes with the metal activity series, highlighting the electron release tendency of metals.

What happens to the reductant in a redox reaction?

• It loses protons and is reduced.

• It gains protons and is oxidized.

• It loses electrons and is oxidized.

• It gains electrons and is reduced.

Which mnemonic helps to remember the process of reduction?

• GER

• OXI

• LEO

• RED

In the reaction between zinc and copper sulfate, what happens to zinc?

• Zinc is oxidized by losing electrons.

• Zinc is reduced by gaining electrons.

• Zinc remains unchanged.

• Zinc forms a compound with copper.

What role does silver play in the reaction with copper?

• Silver acts as an oxidizing agent.

• Silver acts as a reducing agent.

• Silver is neutral.

• Silver is oxidized.

Which of the following is NOT an example of an oxidizing agent?

• Nitrates

• Chlorates

• Oxalic acid

• Permanganates

What determines the activity of a metal in the metal activity series?

• Its tendency to release electrons

• Its ability to gain protons

• Its color

• Its atomic number

Which metal is considered the best oxidizing agent in the metal activity series?

• Zinc

• Iron

• Copper

• Lithium