Practicing Success
Which of the following metals is obtained by the reduction of metal oxide using hydrogen gas? |
Cu Al Mg Fe |
Cu |
Hydrogen may be used to reduce copper oxide to copper, however due to their high reactivity, metal oxides like those of aluminium, magnesium, and iron cannot be reduced. Cu2+/Cu combination has a higher standard reduction potential than hydrogen. Therefore, hydrogen gas can reduce it to its metal. |