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From the electrochemical series given in...

From the electrochemical series given in the text, determine the approximate value of `E^@` for `X^(2+) (aq)+2e to X(s)`
The metal X dissolves in nitric acid but not in hydrochloric acid . It can displace `Ag^+` but not `Cu^(2+)`

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`0.34 V lt E^@ lt 0.80V`
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