Year 12s: what will be the first way you research your future options? >>

Ionic equation, Diprotic acid help :(

*This is from question 7 of the Jan 13 f325 paper*

Completely stuck on how to get the correct answer - since my answer won't cancel down to the usual acid and h+ ionic equation I know I'm wrong, I just don't understand why! I thought when mg reacts with hSO3- this splits to so3^-2 and H??

Could anyone explain this to me?

Reply 1

charco

Study Forum Helper

Original post by Serine

You can tell that your answer is incorrect as the charges do not add up on either side.

2HSO₃^- + Mg --> Mg²⁺ + 2SO₃^2- + H₂

In terms of ionic equations