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AgNO_(3)+NaCl to AgCldarr+NaNO_(3) FeS+H_(2)SO_(4)toFeSO_(4)+H_(2)Suarr What do the upward and downward arrow marks indicate in the above chemical equations ? |
Answer» Solution :`uarr` Upward ARROW mark indicates that gas is evolved and `DARR` downward arrow mark indicates that an insoluble PRECIPITATE (COMPOUND) is formed. | |