If you dissolve 3.5 moles of cacl2 in solution how many moles of ca2 + ions and cl - ions will there be in the solution

Question

Chemistry

Belen Dixon

20 August, 00:13

If you dissolve 3.5 moles of cacl2 in solution how many moles of ca2 + ions and cl - ions will there be in the solution

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Emilia Mayo · Answer 1

Balanced chemical reaction (dissociation) : CaCl₂ (aq) → Ca²⁺ (aq) + 2Cl⁻ (aq).

n (CaCl₂) = 3,5 mol.

From chemical reaction: n (CaCl₂) : n (Ca²⁺) = 1 : 1.

n (Ca²⁺) = 3,5 mol.

From chemical reaction: n (CaCl₂) : n (Cl⁻) = 1 : 2.

n (Cl⁻) = 2 · 3,5 mol.

n (Cl⁻) = 7 mol.

Calcium chloride is salt that completely dissociate in water on calcium cations and chlorine anions.