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Give the spectator ions for the reaction that occurs when aqueous solutions of K₂CO₃ and HBr are mixed.

a. H⁺ and Br⁻
b. H⁺ and CO₃²⁻
c. K⁺ and CO₃²⁻
d. K⁺ and Br⁻
e. no spectator ions are present.

1 Answer

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Final answer:

The spectator ions for the reaction between K₂CO₃ and HBr are K⁺ and Br⁻, as they appear unchanged on both sides of the equation. option d is correct.

Step-by-step explanation:

The spectator ions for the reaction that occurs when aqueous solutions of K₂CO₃ and HBr are mixed are the ions that do not participate in the reaction. When these two solutions react, the products are KBr and H₂CO₃ (carbonic acid, which typically decomposes into CO₂ and H₂O).

The spectator ions are the ones that appear unchanged on both sides of the equation. The K⁺ (potassium) and Br⁻ (bromide) ions do not undergo a chemical change during the reaction and are present in the same form in the reactants and the products, therefore, the correct answer is d. K⁺ and Br⁻.

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