In the reaction between Na2SO4 and BaCl2, which ions are spectators?

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Multiple Choice

In the reaction between Na2SO4 and BaCl2, which ions are spectators?

Explanation:
Spectator ions are those that don’t participate in the formation of the solid during a precipitation reaction. When Na2SO4 and BaCl2 are mixed, a solid BaSO4 forms because Ba2+ combines with SO4^2- to make BaSO4(s). The ions that actually form the precipitate are Ba2+ and SO4^2-, while the sodium ions and chloride ions remain in solution as Na+ and Cl−. They don’t take part in the solid’s formation, so they’re the spectator ions. The net ionic equation is Ba2+ + SO4^2- → BaSO4(s).

Spectator ions are those that don’t participate in the formation of the solid during a precipitation reaction. When Na2SO4 and BaCl2 are mixed, a solid BaSO4 forms because Ba2+ combines with SO4^2- to make BaSO4(s). The ions that actually form the precipitate are Ba2+ and SO4^2-, while the sodium ions and chloride ions remain in solution as Na+ and Cl−. They don’t take part in the solid’s formation, so they’re the spectator ions. The net ionic equation is Ba2+ + SO4^2- → BaSO4(s).

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