JAMB - Chemistry (2007 - No. 11)
Which of the following sets of metals dissolves in dilute HCl?
Fe, Sn and Cu
Mg, Fe and Cu
Mg, Sn and Fe
Cu, Mg and Sn
คำอธิบาย
Mg, Sn and Fe all dissolve in dilute HCl because they are more reactive and have a greater tendency to lose electrons to form ions. In contrast, Cu does not readily dissolve in dilute HCl.