Which of the following sets of metals dissolves in dilute HCl?

mikeewyse

9 years ago

The answer above is very correct. It's actually Magnesium, Tin and Iron because these are reactive metals. HCl acid does not react with copper. It's only those metals whose standard reduction potentials are lower than that of hydrogen, react with non-oxidising acids like HCl and dil.H2SO4, and displace hydrogen from them I.e since cu is lower that H in the electrochemical series, no rxn occurs.



But I've also read that copper reacts with HCl in the presence of O2(oxygen) forming CuCl2 & water though it can't displace H2.



Cu+2HCl+1/2O2--> CuCl2+H2O

Ishaqsulaiman

3 years ago

mg , sn , and fe are above hydrogen in the electrochemical series so they can displace hydrogen and dissolve HCl

Chimemeria

9 years ago

the answer is correct

Sensei

3 weeks ago

wow so iron is very reactive okay na 😂👍

christy1234

9 years ago

I think is b

Domshak paul

9 years ago

Its b

P.blessed

10 years ago

should it not be B?