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Could someone explain this for me I don't understand?​

Could someone explain this for me I don't understand?​-example-1
User Dooie
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1 Answer

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Answer:

Ok so I assume they gave u a reaction before asking this question. Look at that reaction and try to figure out what substances are changing in valency, if there is a substance(s) that doesn't change its valency then it's a spectator ion.

User Aseagram
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