Page |89 Ba(NOa)a HNO3 Fe(NOs)s and KMnO and Comments Reagent AgNO3 White AgCl A
ID: 552308 • Letter: P
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Page |89 Ba(NOa)a HNO3 Fe(NOs)s and KMnO and Comments Reagent AgNO3 White AgCl Anion mineral ol mineral oil NR NR Chloride, Ct precipitate, precipitate is soluble in NR NR Mineral ol will turn precipitate is orange. slightly Beige AgBr White Bromide, Br soluble in conc. NHs precipitate is NOT soluble in conc. NH3 Carbonate, precipitate, Precipitate CO2 gas Ag COs Yellow precipitate, CO32 Mineral ol will turn purple NR NR NOT soluble in conc. NH3 The lodide, I Agl WhitePrecipitate NR NOT soluble Sulfate, SO precipitate, in conc. NHs Ag2SO4 Table 1. Summary of the chemical reactions.Explanation / Answer
Most silver salts are insoluble except AgNO3 and Ag (C2H3O2), so Ag NO3 form precipitate with Cl-, Br-, I-,CO32- and SO42-.
Salts containing Cl -, Br -, or I - are generally soluble except salts of Ag+, Pb2+, so Ba (NO3)2 does not form ppt with them. Only SO42- will form ppt with Ba(NO3)2.
Salts containing nitrate ion are generally soluble.
HNO2 react with CO32- and CO2 is released but it is not precipitation reaction.
Iodine will react with mineral oil, its color change from pink to violet color.
2 I-(aq) + 2 Fe3+ --> I2 (aq) + 2 Fe2+ (aq)
KMnO4 is a stronger oxidizing agent than the iron(III) nitrate and will oxidize bromide, Br- to Br2 and its color change from yellow to brown color.
10 Br-(aq) + 2 MnO4 (aq) + 16 H+ (aq) ---> 5 Br2 (aq) + 2 Mn2+ (aq) + 8 H2O(l)
Ksp for AgCl is greater than Ksp of AgBr, AgI and Ag(SO4)2,so AgCl is soluble in con.NH3.
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