Question

21. Dilute HCI is taken in a test tube and
pieces of copper turnings were added.
The change you may observe is :
A) Formation of bubbles and
temperature rises.
BS Neither formation of bubbles nor
rising of temperature.
C) No formation of bubbles but
temperature rises.
D) Formation of bubbles, but
temperature remains same.​

Answer 1

Answer:

option B is correct

Explanation:

• coz copper is a very less reactive metal and in reactivity series it comes after hydrogen and the metals which are above hydrogen can only displace it and the copper is below hydrogen so it can't displace it so copper does not react with HCl coz it can't displace hydrogen from hydrochloric acid.