Question

Rechargeable batteries have become an essential part of our environmentally conscientious society. The nickel-cadmium cell battery is a rechargeable battery used in small electronic devices. The half reactions that take place in the nickel-cadmium battery during discharge are: Half reaction 1: Cd(OH)$_2$(s) + 2e$^{-}$ → Cd(s) + 2OH$^{-}$ Half reaction 2: 2NiO$_2$(s) + H$_2$O + 2e$^{-}$ → 2Ni(OH)$_2$(s) + 2OH$^{-}$ What is the oxidising agent in the nickel cadmium battery during discharge?

• A. Cd
• B. CdOH$_2$
• C. NiO$_2$
• D. Ni(OH)$_2$

Hint:

The oxidising agent is the substance that accepts electrons during the redox reaction.

Answer 1

The Correct Option is B

In the nickel-cadmium battery, CdOH$_2$ is oxidised during discharge, making it the oxidising agent.