P and Q are two solutions at equal concentration, each holding a different Group 2 ion. One has $\text{Mg}^{2+}$, while the other has $\text{Ba}^{2+}$. Separate $5\,\text{cm}^3$ portions of P and Q are tested. test 1: introduce $1\,\text{cm}^3$ of $0.1\,\text{mol dm}^{-3}$ $\text{Na}_2\text{SO}_4(aq)$ test 2: introduce $1\,\text{cm}^3$ of $0.1\,\text{mol dm}^{-3}$ $\text{NaOH}(aq)$ What observations are obtained in these tests?
- Amore precipitate with $\text{Ba}^{2+}$; more precipitate with $\text{Ba}^{2+}$
- Bmore precipitate with $\text{Ba}^{2+}$; more precipitate with $\text{Mg}^{2+}$
- Cmore precipitate with $\text{Mg}^{2+}$; more precipitate with $\text{Ba}^{2+}$
- Dmore precipitate with $\text{Mg}^{2+}$; more precipitate with $\text{Mg}^{2+}$