WAEC - Chemistry (2022 - No. 8)
Which of the following statements about the standard hydrogen electrode is not correct?
The hydrogen gas is at a pressure of 1 atmosphere
A solution containing 1 mol dm-3 of H+ (aq) ions is used
A platinum electrode is used
The temperature is kept at 20 °C
Vysvětlení
The standard hydrogen electrode consists of hydrogen gas at 25oC