When cacl2 is dissolved in h2o, how many ions per molecule are produced

3.

Explanation:

1) CaCl₂ is a ionic compound formed by 1 ions of calcium, Ca²⁺, and 2 ions of chlorine, Cl⁻.

2) The ionic compounds dissociate in water (some dissociate more than others) into its ions.

3) Each unit of CaCl₂ dissolved will generate one Ca²⁺ one two Cl⁻, according to this equation:

CaCl₂ (aq) → Ca²⁺ + 2 Cl⁻

Note that if you add up the charges of the ions you end up with the same charge of the original formula: 2 + + 2 (1-) = 2 - 2 = 0. The original formula CaCl₂ is neutral (charge 0).

4) So in total, those are 3 ions, per each unit dissolved.

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