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Copper does not liberate hydrogen from dilute HCl. Which property explains this?
ANegative E(Cu2+/Cu)
BPositive E(Cu2+/Cu)
CLow ionisation enthalpy
DLow atomisation enthalpy
Answer & Solution
Correct answer: B. Positive E(Cu2+/Cu)
Copper has a positive standard electrode potential of +0.34 V, so it cannot reduce H+ to hydrogen.
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