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11 Nov 2019
Q-40 WORKSHEET 3 1a. In the first step of procedure I11-1 ammonia is added. Iron(II) hydroxide and aluminunm hydroxide precipitate from solution as a result. Write a balanced NIE that corresponds to the recipitation of iron(IlI) hydroxide in aqueous ammonia. (Hint: this equation is analogous to precipitation of bismuth hydroxide from ammoniÄ : worksheet 2, 5b.) b. The group Hi cations are pre ted from on as metal sulfides is ammonium sulfide. Is ammonium sulfide an electrolyte or non-electrolyte in water? electroyte Write a balanced NIE that corresponds to the dissolution of ammonium sulfide. c. d. Write a balanced NIE that corresponds to the precipitation of manganese(ll) sulfide in procedure II-1 2a. Iron(II) sulfide, manganese(Il) sulfide, and zinc sulfide dissolve in nitric acid (procedure III-2) due to the oxidation of sulfide to elemental sulfur. Write a balanced NIE that corresponds to the dissolution of manganese(ll) sulfide in nitric acid. (Hint: This equation is analogous to the dissolution of lead sulfide- worksheet 2, 2.) Write a balanced NIE that corresponds to the precipitation of manganese(II) hydroxide by reaction with aqueous sodium hydroxide in procedure lll-2. (Hint: is sodium hydroxide a strong or weak base?) b. c. Write a balanced NIE that corresponds to the formation of the complex ion [Zn(OH)by the reaction of zinc(Il) ion with excess sodium hydroxide in procedure IIl-2
Q-40 WORKSHEET 3 1a. In the first step of procedure I11-1 ammonia is added. Iron(II) hydroxide and aluminunm hydroxide precipitate from solution as a result. Write a balanced NIE that corresponds to the recipitation of iron(IlI) hydroxide in aqueous ammonia. (Hint: this equation is analogous to precipitation of bismuth hydroxide from ammoniÄ : worksheet 2, 5b.) b. The group Hi cations are pre ted from on as metal sulfides is ammonium sulfide. Is ammonium sulfide an electrolyte or non-electrolyte in water? electroyte Write a balanced NIE that corresponds to the dissolution of ammonium sulfide. c. d. Write a balanced NIE that corresponds to the precipitation of manganese(ll) sulfide in procedure II-1 2a. Iron(II) sulfide, manganese(Il) sulfide, and zinc sulfide dissolve in nitric acid (procedure III-2) due to the oxidation of sulfide to elemental sulfur. Write a balanced NIE that corresponds to the dissolution of manganese(ll) sulfide in nitric acid. (Hint: This equation is analogous to the dissolution of lead sulfide- worksheet 2, 2.) Write a balanced NIE that corresponds to the precipitation of manganese(II) hydroxide by reaction with aqueous sodium hydroxide in procedure lll-2. (Hint: is sodium hydroxide a strong or weak base?) b. c. Write a balanced NIE that corresponds to the formation of the complex ion [Zn(OH)by the reaction of zinc(Il) ion with excess sodium hydroxide in procedure IIl-2
Bunny GreenfelderLv2
28 Feb 2019