Question

when the following two solutions are mixed:

k₂co₃(aq) + fe(no₃)₃(aq)

the mixture contains the ions listed below. sort these species into spectator ions and ions that react.

drag the appropriate items to their respective bins.

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no₃⁻(aq) fe³⁺(aq) co₃²⁻(aq) k⁺(aq)

spectator ions ions that react

Explanation:

Step1: Write the balanced chemical equation

$$3K_{2}CO_{3}(aq)+2Fe(NO_{3})_{3}(aq) ightarrow Fe_{2}(CO_{3})_{3}(s)+6KNO_{3}(aq)$$

Step2: Write the complete ionic equation

$$6K^{+}(aq)+3CO_{3}^{2 -}(aq)+2Fe^{3+}(aq)+6NO_{3}^{-}(aq) ightarrow Fe_{2}(CO_{3})_{3}(s)+6K^{+}(aq)+6NO_{3}^{-}(aq)$$

Step3: Identify spectator ions

Spectator ions are ions that do not participate in the formation of the precipitate. In the complete ionic equation, \(K^{+}\) and \(NO_{3}^{-}\) appear on both sides of the equation.

Step4: Identify reacting ions

The ions that react are \(Fe^{3+}\) and \(CO_{3}^{2 -}\) as they combine to form the insoluble \(Fe_{2}(CO_{3})_{3}\) precipitate.

Answer:

• Spectator ions: \(K^{+}(aq)\), \(NO_{3}^{-}(aq)\)
• Ions that react: \(Fe^{3+}(aq)\), \(CO_{3}^{2 -}(aq)\)