The three metal compounds are also tested separately with three reagents:● aqueous acidified silver nitrate● aqueous a acidified barium chloride● aqueous sodium hydroxideThe table shows the results of all the tests.MetalcompoundFlame test Aqueous acidifiedsilver nitrateAqueous acidifiedbarium chlorideAqueoussodium hydroxideX yellow white precipitate no precipitate no precipitateY red no precipitate white precipitate no precipitateZ no colour no precipitate no precipitate Green precipitate(i) Give the name of compound X and of compound Y.compound Xcompound Y(ii) Identify the cation present in compound Z.
Question
The three metal compounds are also tested separately with three reagents:● aqueous acidified silver nitrate● aqueous a acidified barium chloride● aqueous sodium hydroxideThe table shows the results of all the tests.MetalcompoundFlame test Aqueous acidifiedsilver nitrateAqueous acidifiedbarium chlorideAqueoussodium hydroxideX yellow white precipitate no precipitate no precipitateY red no precipitate white precipitate no precipitateZ no colour no precipitate no precipitate Green precipitate(i) Give the name of compound X and of compound Y.compound Xcompound Y(ii) Identify the cation present in compound Z.
Solution
(i) Based on the given results, compound X is likely to be Silver Iodide (AgI) and compound Y is likely to be Barium Sulfate (BaSO4).
The yellow flame test and white precipitate with aqueous acidified silver nitrate suggest that compound X is a halide, specifically iodide. Silver iodide gives a yellow precipitate with silver nitrate.
The red flame test and white precipitate with aqueous acidified barium chloride suggest that compound Y is a sulfate. Barium sulfate gives a white precipitate with barium chloride.
(ii) The cation present in compound Z is likely to be Iron (II) (Fe2+).
The green precipitate with aqueous sodium hydroxide suggests the presence of Iron (II) ions. Iron (II) hydroxide gives a green precipitate with sodium hydroxide.
Similar Questions
The table shows the results of all the tests.MetalcompoundFlame test Aqueous acidifiedsilver nitrateAqueous acidifiedbarium chlorideAqueoussodium hydroxideX yellow white precipitate no precipitate no precipitateY red no precipitate white precipitate no precipitateZ no colour no precipitate no precipitate Green precipitate(i) Give the name of compound X and of compound Y.compound Xcompound Y(ii) Identify the cation present in compound Z.(c) Describe a chemical test, other than heating, that could be used to show that compound Zcontains carbonate ions.testresult
To test for the presence of chloride ions in ion, correct sequence of reagents to use is A.Ba(NO3)2(aq) then HNO3(aq). B.HCl(aq) then Ba(NO3)2(aq). C.HCl(aq) then Ag3(aq). D.HNO3(aq) then fresh FeSO4(aq). E.HNO3(aq) then AgNO3(aq).
n the test to distinguish halide ions, the reagents commonly used are----------------A. AgNO3(aq) and HNO3(aq)B. BaCl2(aq) and HCl(aq)C. AgNO3(aq) and NH3(aq)D. AgNO3(aq) and BaCl2(aq)
Indicate whether each species is a reactant, product or spectator.Silver nitrate and sodium chloride are mixed, precipitating silver chlorideAg+(aq) + NO3-(aq) + Na+(aq) + Cl-(aq) → AgCl(s) + Na+(aq) + NO3-(aq)
If silver nitrate solution is added to a salt solution then a yellow precipitate is obtained, the salt may containBr–I–Cl–F–
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