Question

Zinc and magnesium can displace hydrogen from dilute acids. Copper and silver cannot displace hydrogen from dilute acids.

Answer 1

Answer:

Zinc and magenisum are very reactive than hydrogen so they can displace hydrogen from its salt solution while copper and silver are less reactive than hydrogen so they can not displace hydrogen from salt solution.

1. Zn + H2so4 = ZnSo4 + H2
2. Mg + H2so4 = MgSo4 + H2
3. Cu+ H2so4 = no reaction
4. Ag + H2so4 = no reaction

Answer 2

Answer:

Both Zinc and Magnesium are more electropositive than Hydrogen, whereas both silver and Copper are less electropositive than Hydrogen..