Which Species Would Be Considered a Spectator Ion Based on the Following

question 39

Multiple Choice

Which species would be considered a spectator ion based on the following equation?
Ba²⁺ + 2NO₃^- + 2Na⁺ + SO₄²⁺ $\rarr$ BaSO_4(s) + 2NO₃^- + 2Na⁺

• A) Ba²⁺
• B) SO₄²⁺
• C) BaSO₄
• D) 2NO₃^-

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