By metal i mean Death metal, industial, melodic metal,that kinda stuff. Also who listens to these bands:-Devil Driver-Behemoth-White Chapel-In Flames-Cannible Corpse-Lamb of God
The active ingredient in bleach is the hypochlorite ion ClO- (Na+ salt) which is a strong oxidizing agent: ClO- + H2O + 2e- -> Cl- + 2OH- E = 0.89V [1] I have +0.81 V from another source. From this reduction potential bleach should from a thermodynamic stand point oxidize just about every common metal with the exception of gold (Au) and possibly silver (Ag) as they are have higher reduaction potentials [1]. Let's take Ni as an example: Ni2+(aq) + 2e- -> Ni(s) E = -0.25 V turning the last equation around, changing the sign and combining it with the first equation we have Ni(s) + ClO- + H2O -> Ni2+(aq) + Cl- + 2OH- E = +1.14 V the +ve potential makes it highly allowed. But thermodynamics does not tell about the rate. What probably happens is that Ni(OH)2 precipitates and protects the surface from further attack Ksp for Ni(OH)2 is 5.48×10-16 [2]. Metals that are amphoteric (react with acid and base) such as Al and Zn will probably dissolve in bleach soln. But again the surface of Al is Al2O3 that may protect the Al from attack at RT. Things to think about.
