please help me. Than In this step, you start with three drops each of solution o
ID: 964507 • Letter: P
Question
please help me. Than In this step, you start with three drops each of solution of Group II cations Fe^3+, Co^2+, Ni^2+ and Mn^2+ You add concentrated ammonia to make the solution basic, resulting in a precipitate; and then you add (NH_4)_2s, resuiting in another precipitate What are the precipitates formed from the reaction between NH_3(aq) and each of the Group III What are the precipitates formed from the reaction between (NH_4)_2S(aq) and each of the Group III cations? Write balanced chemical equations for the reactions forming these two sets of precipitates from each of the four Group III cations. You should have eight chemical equations total.Explanation / Answer
2NH3 + 2H2O ----> 2NH4OH(aq)
a. Mn^2+(aq) + 2NH4OH(aq) ----> Mn(OH)2(s) + 2NH4+(aq)
Co^2+(aq) + 2NH4OH(aq) ----> Co(OH)2(s) + 2NH4+(aq)
Fe^3+(aq) + 3NH4OH(aq) ----> Fe(OH)3(s) + 3NH4+(aq)
Ni^2+(aq) + 2NH4OH(aq) ----> Ni(OH)2(s) + 2NH4+(aq)
b. Mn^2+(aq) + (NH4)2S(aq) ----> MnS(s) + 2NH4+(aq)
Co^2+(aq) + (NH4)2S(aq) ----> CoS(s) + 2NH4+(aq)
Fe^3+(aq) + 3(NH4)2S(aq) ----> Fe2S3(s) + 6NH4+(aq)
Ni^2+(aq) + (NH4)2S(aq) ----> NiS(s) + 2NH4+(aq)
c. Mn^2+(aq) + 2NH4OH(aq) ----> Mn(OH)2(s) + 2NH4+(aq)
Co^2+(aq) + 2NH4OH(aq) ----> Co(OH)2(s) + 2NH4+(aq)
Fe^3+(aq) + 3NH4OH(aq) ----> Fe(OH)3(s) + 3NH4+(aq)
Ni^2+(aq) + 2NH4OH(aq) ----> Ni(OH)2(s) + 2NH4+(aq)
Mn^2+(aq) + (NH4)2S(aq) ----> MnS(s) + 2NH4+(aq)
Co^2+(aq) + (NH4)2S(aq) ----> CoS(s) + 2NH4+(aq)
Fe^3+(aq) + 3(NH4)2S(aq) ----> Fe2S3(s) + 6NH4+(aq)
Ni^2+(aq) + (NH4)2S(aq) ----> NiS(s) + 2NH4+(aq)
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.