Question

Sometimes we use high reactive metals to get metals of metals of middle reactivity series. give two examples .what are these reactions called ?do they have any practical application if so explain?

Answer 1

Answer:

these reactions are simply called displacemt reactions.

ex.

Fe2so4+Al ----> Al2(so2)3 + fe

here fe got is in molten form used to join the railway tracks.

Feso4 + na ----> na2so4 +fe