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：2025/12/06
spectator ion
（ plural ）
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(chemistry) An ion that is unchanged in an ionic reaction, i.e. that remains in solution and do not take part in the reaction.
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spectator ion
In the precipitation experiment, the spectator ion remained in solution and did not affect the formation of the solid.
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In the precipitation experiment, the spectator ion remained in solution and did not affect the formation of the solid.
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