An aqueous solution of aluminium sulfate (Mr=342.1M_{\text{r}} = 342.1Mr=342.1) is prepared by dissolving 1.71 g of Al2(SO4)3\text{Al}_2(\text{SO}_4)_3Al2(SO4)3 in water to make 250 cm3 of solution. In this solution, the aluminium sulfate is fully dissociated into its constituent ions.
What is the total concentration of all ions in this solution?
1.00×10−1 mol dm−31.00 \times 10^{-1}\text{ mol dm}^{-3}1.00×10−1 mol dm−3
6.00×10−2 mol dm−36.00 \times 10^{-2}\text{ mol dm}^{-3}6.00×10−2 mol dm−3
4.00×10−2 mol dm−34.00 \times 10^{-2}\text{ mol dm}^{-3}4.00×10−2 mol dm−3
2.00×10−2 mol dm−32.00 \times 10^{-2}\text{ mol dm}^{-3}2.00×10−2 mol dm−3