Anybody know how to rewrite equations as ionic equations?? Help pls?

1) Firstly, balance the equation. Next, separate the compounds that is in aqueous state into ions. Compounds or element that is in solid, liquid or gaseous state should not be separated. In equation 1, Zn is a solid, and H2 is a gas. Hence you should not turn them into ions. However, H2SO4 and ZnSO4 is in aqueous state, so you should separate them into ions.

eg.) Zn becomes Zn2+

H2SO4 becomes 2H+ and SO4 2- (note, there are 2 hydrogen in H2SO4, so when you separete the compound, you must remember to write it as 2H+. Next, SO4 2- is one anion, DO NOT SO4 2-)

hence, [Zn](s) + [2H+][SO4 2-](aq) = [Zn2+][SO4 2-] + [H2]

2) now, cancel away ions that appear before and after the reaction. For the above equation, we can see that [SO4 2-] appears before and after the reaction. So, we cancel away [SO4 2-].

3) now, rewrite the new equation

[Zn](s) + [2H+] —–> [Zn2+] + [H2]

Now, try to use this approach for the rest of the questions.

Remove any spectator Ions, the ions that don’t change their charge after the reactions have gone through.

(P.S., a good idea would be to put the charges down on the compounds so it’s easy to see which ones change)