AP Chemistrymediummcq1 pt
A solution contains 0.20 mol of NaCl in 0.50 L. What is the concentration of chloride ions?
A.0.40 M
B.0.20 M
C.0.10 M
D.0.80 M
Explanation
Core Concept
Each NaCl dissociates into one Na⁺ and one Cl⁻, so 0.20 mol NaCl gives 0.20 mol Cl⁻ in 0.50 L = 0.40 M. Ionic dissociation multiplies ion concentration.
Correct Answer
A0.40 M
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