Solutions P and Q each contain a different Group 2 ion at equal concentration. One has $\text{Mg}^{2+}$, whereas the other has $\text{Ba}^{2+}$. Separate $5\ \text{cm}^3$ portions of P and Q are tested. test 1: add $1\ \text{cm}^3$ of $0.1\ \text{mol dm}^{-3}\ \text{Na}_2\text{SO}_4(aq)$ test 2: add $1\ \text{cm}^3$ of $0.1\ \text{mol dm}^{-3}\ \text{NaOH}(aq)$ What outcomes would these tests give?
- Atest 1: more precipitate with $\text{Ba}^{2+}$; test 2: more precipitate with $\text{Ba}^{2+}$
- Btest 1: more precipitate with $\text{Ba}^{2+}$; test 2: more precipitate with $\text{Mg}^{2+}$
- Ctest 1: more precipitate with $\text{Mg}^{2+}$; test 2: more precipitate with $\text{Ba}^{2+}$
- Dtest 1: more precipitate with $\text{Mg}^{2+}$; test 2: more precipitate with $\text{Mg}^{2+}$