Question

To a mixture containing places of zinc , copper and silver , ` 1 M H_(2)SO_(4)` was added . `H_(2)` gas was found to be evolved . Which of the metal/metals do you think has/have reacted ? Given
`E^(@) Zn|Zn^(2+) = + 0.76 V , E_(Cu^(2+) |Cu)^(@) = + 0.34 V` ,
`E_(Ag^(+) |Ag)^(@) = +0.80` V
A. All the metals
B. Only Zn
C. Both Zn and Cu
D. Only Ag

Answer 1

Correct Answer - B
Out of Zn ,Cu and Ag , only zinc has higher oxidation potential than `H_(2)` .