Solutions P and Q each have a different Group 2 ion, both at the same concentration. One solution contains $\text{Mg}^{2+}$ and the other contains $\text{Ba}^{2+}$. Separate $5\,\text{cm}^3$ samples 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 are obtained in these tests?
- 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 $\text{Mg}^{2+}$