Question

What metal when reacted with dilute hydrochloric acid, gives a pale green solution?

Answer 1

It could be iron metal.........

Explanation:

And how would you know? Add some dilute hydrochloric acid to iron filings.......

`"iron + hydrochloric acid "rarr" iron chloride + dihydrogen gas"`

`Fe(s) + 2HCl(aq) rarr FeCl_2(aq) + H_2(g)uarr`

In water, `FeCl_2(aq)`, is probably the pale green `[FeCl_2((OH)_2)_4]` complex.