Question

The metals gold and copper do not displace hydrogen from dilute acids because they are,
A]More electro positive B]less electro positive
C]more reactive D}strong reducing agents

Answer 1

Answer:

B]less electro positive

Answer 2

Answer:

B] less electro positive

Explanation:

In displacement reaction, more reactive metal displaces less reactive metal. Since, zinc is more reactive than hydrogen it displaces hydrogen in dilute hydrochloric acid and copper is less reactive than hydrogen and hence cannot displace hydrogen in dilute hydrochloric acid.