What does the negative sign in the expression | vedclass

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(A) The negative value of the standard reduction potential $(E^o)$ indicates that the metal is more reactive than hydrogen $(H_2)$.Since $E_{Zn^{2+}|Z

Vedclass · Accepted Answer

$Zn$ is a better reducing agent than $H_2$.

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(A) The negative value of the standard reduction potential $(E^o)$ indicates that the metal is more reactive than hydrogen $(H_2)$.Since $E_{Zn^{2+}|Zn}^o = -0.76 \ V$ is negative,$Zn$ has a greater tendency to lose electrons compared to $H_2$.Therefore,$Zn$ acts as a stronger reducing agent than $H_2$ and can displace $H_2$ from acidic solutions.In a galvanic cell,$Zn$ will act as the anode and undergo oxidation $(Zn \rightarrow Zn^{2+} + 2e^-)$.

What does the negative sign in the expression $E_{Zn^{2+}|Zn}^o = -0.76 \ V$ mean?

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