Why is it not possible to measure the single electrode potential ?

(i) Why does zinc react with dilute sulphuric acid but copper does not ? (ii) Why it is not possible to measure the single electrode potential?

What is single electrode potential ?

What is single electrode potential ?

What is single electrode potential ?

Why it not possible to determine the absoulte reduction potential of an elctrode?

Why it is not possible to determine the absolute value of potential of a single electrode?

Why is it impossible to obtain the electrode potential for a single electrode?