How can i identify precipitate in pre cipitation reaction.

1.	How can i identify precipitate in pre cipitation reaction.
Answer» Ex....if products are....NaCl + caco3. ...its most likely that caco3 will form ppt..........bcoz calcium is less reactive than sodiumm....,.........but exceptions are always there..okk Usually the compound containing less reactive metal makes ppt......but there are several exceptions too?

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