The rechargeable cells used in calculators and battery

Last updated: 7/3/2023

The rechargeable cells used in calculators and battery operated tools are based on nickel and cadmium electrodes It may involve which of the following cell reactions to make cell reaction spontaneous Cd s 20H aq Cd OH 2e E 0 40 V OXI Ca OH 2e Cd s 2OH aq E 0 40 V 2Ni OH s 20H aq 2NiO OH s 2H O l 2e E 0 49 V 2NiO OH s 2H O 1 2e 2Ni OH s 2OH aq Ed 0 49 V