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What does the negative sign in the expression `E_(Zn^(2+)//Zn)^(@)=-0.76V` mean?

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Greater the negative reactivity of standard reduction potential of metal greater is its reactivity. It means that Zn is more reactive than hydrogen. When zinc electrode will be connected to standard hydrogen electrode Zn will get oxidised and `H^(+)` will get reduced. thus, zinc electrode will be the anode of the cell and hydrogen electrode will be the cathode of the cell.

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