Question

What is the concentration of nitrate ions in a 3.79M `Mg(NO_3)_2` solution?

Answer 1

If the solution has a concentration of `3.79` `mol` `L^-1` in `Mg(NO_3)_2`, then the concentration of the nitrate is twice this value.

Explanation:

`Mg(NO_3)_2(s) rarr Mg^(2+) + 2NO_3^-`

`[Mg^(2+)] = 3.79 mol*L^-1; [NO_3^-] = ??`