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7 July, 01:17

Which of the following solutions contains the largest total concentration of ions, assuming complete dissociation

.010 M aluminum chloride

.010M sodium chloride

.010M aluminum sulfate

.010M calcium chloride

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  1. 7 July, 04:59
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    In their chemical formulas, aluminum chloride is AlCl₃, sodium chloride is NaCl, aluminum sulfate is Al₂ (SO₄) ₃, and calcium chloride is CaCl₂. These are all ionic compounds, so they completely dissociate when solvated and conduct electricity as electrolytes. The largest concentration would be 0.010 M aluminum sulfate because it produces 5 ions when dissociated: 2 ions of Al³⁺ and 3 ions of SO₄²⁻. Thus, it's concentration would be 5 times larger: 5 (0.01) = 0.050 M.
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