1. Siver nitrate is sadded to a solution containing an unknown salt. An off-whit
ID: 709681 • Letter: 1
Question
1. Siver nitrate is sadded to a solution containing an unknown salt. An off-white colored precipitate forms. Nitric acid is added to the mixture, the precipitate dissolves and a gas is given off. What is the anion present: Cl-, Br-, I-, PO4 3-, SO4 2-, CO3 2- ? 2. A common table salt substitute gives a lavender flame test. It also yields a nitric acid insoluble white precipitate upon the addition of silver nitrate. What are the formula and name of this commpound sold as salt substitute? Why are these ions absent: Cl-, Br-, I-, PO4 3-, SO4 2-, CO3 2- ? 1. Siver nitrate is sadded to a solution containing an unknown salt. An off-white colored precipitate forms. Nitric acid is added to the mixture, the precipitate dissolves and a gas is given off. What is the anion present: Cl-, Br-, I-, PO4 3-, SO4 2-, CO3 2- ? 2. A common table salt substitute gives a lavender flame test. It also yields a nitric acid insoluble white precipitate upon the addition of silver nitrate. What are the formula and name of this commpound sold as salt substitute? Why are these ions absent: Cl-, Br-, I-, PO4 3-, SO4 2-, CO3 2- ?Explanation / Answer
1. Since off white ppt is given it is Br- or I- but as the ppt is soluble in HNO3 it is Br-. 2. Formula : KCl is the substitute.
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