CHEM BRAIN

At 298K, the standard electrode potential of Cu+2/Cu, Zn+2/Zn, Fe+2/Fe and Ag+1/Ag are 0.34V, -0.76 , -0.44 and 0.80V respectively. On the basis of standard electrode potential which of following reaction can't occur?

NEET-2022 

\( Mg^{+2} + 2e^- \rightarrow Mg \  E^o =-2.37V \)  MDCAT2019

\( Zn^{+2} + 2e^- \rightarrow Zn \  E^o =-0.76V \)

\( 2H^+ + 2e^- \rightarrow H_2 \  E^o =0.00V \)

\( Cu^{+2} + 2e^- \rightarrow Cu \  E^o =+0.34V \)

\( Cl_2 + 2e^- \rightarrow 2Cl^- \  E^o =+1.36V \)

\( Au^{+3} + 3e^- \rightarrow Au \  E^o =+1.50V \)

Keeping in view the values of standard reduction potential given below, which one of the following would you select as a feasible redox chemical reaction? 

A cell is constructed of the following two half cells. What is the \( E^o \) of cell   ETEA2016

\( Ag^+ + e^- \rightarrow Ag + 0.08V \) 

\( Al^{+3} + e^- \rightarrow Al -1.67V \) 

Which of the following metal does not liberate hydrogen on reaction with acid NUMS2019

Study the following facts MDCAT2015

\( Zn \rightarrow Zn^{+2} + 2e^-  \  E^o = +0.76V \)

\( Cu \rightarrow Cu^{+2} + 2e^-  \  E^o = -0.34V \)