What is the voltage at which electrolysis of brine takes place?

< 2.2 V > 2.2 V 2.2 V Brine cannot be electrolyzed

> 2.2 V

The minimum potential difference needed to electrolyze brine is 2.2 V, according theoretical estimates. However, practical electrolysis needs an emf larger than 2.2 V due to overvoltage.