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(B) The standard electrode potential is a measure of the potential difference between an electrode and a standard hydrogen electrode $(SHE)$ under sta

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Voltmeter

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(B) The standard electrode potential is a measure of the potential difference between an electrode and a standard hydrogen electrode $(SHE)$ under standard conditions ($1 \ M$ concentration,$298 \ K$).This potential difference is measured using a high-resistance voltmeter or a potentiometer to ensure that no current flows through the circuit,which would otherwise cause a voltage drop due to internal resistance.

The standard electrode potential is measured by

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