Metals which will not evolve H 2 gas with dil . HCl are

Question

Metals which will not evolve H 2 gas with dil . HCl are, Cu, Ag, Au, Cu, Zn, Al, Fe, Ag, Pt, Hg, Mg, Pt

MARKS App · Accepted Answer

The metals whose reduction potentials are greater than the reduction potential of Hydrogen do not liberate

H_{2}

gas.

H^{+} + e^{-} \to \frac{1}{2} H_{2} {;E}^{ο} = 0.00 V

{Au}^{3 +} + 3 e^{-} \to {Au             E}^{o} = + 1.50 V

{Ag}^{+} + e^{-} \to {Ag                   E}^{o} = + 0.799 V

{Cu}^{2 +} + 2 e^{-} \to {Cu              E}^{o} = + 0.34 V