What will happen if i drop a piece of iron nail into 3ml of 6M HCl solution?

Question

and was tested with gas formed with a lighted splinter.. plsss..explain.. how does it happen?

Answer 1

At first you get a wet nail.

Then the iron oxide coating begins to dissolve in the acidic solution.

Fe2O3(s) + 6HCl(aq) --> 2FeCl3(aq) + 3H2O(l)

or

Fe2O3(s) + 6H+ --> Fe3+ + 3H2O

Then the iron metal which has become exposed reacts with the hydrogen ion to make iron ions and hydrogen gas

2Fe + 6HCl(aq) --> 2FeCl3(aq) + 3H2(g)

or

2Fe + 6H+ --> 2Fe3+ + 3H2(g)

The hydrogen gas that is produced should burn when tested with a lighted splint.