Question

 Name two metals which will displace hydrogen from dilute acids, and two metals which will not.

Name two metals which can displace hydrogen from dilute acids.

Answer 1

Iron and aluminium will displace hydrogen from dilute acids as they more reactive then hydrogen. Mercury and copper cannot displace hydrogen from dilute acids as they are less reactive than hydrogen.

Answer 2

 Sodium and magnesium are two metals which can displace hydrogen from dilute acids.