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Author Question: A solution may contain the following ions Ag+, Cu2+, Cd2+, Mn2+, Ni2+ and Na+. A white precipitate ... (Read 45 times)

Capo

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on: Feb 15, 2020

Question 1

Which metal sulfides can be precipitated from a solution that is 0.01 M in Mn2+, Zn2+, Pb2+ and Cu2+ and 0.10 M in H2S at a pH of 0.50?



◦ CuS
◦ ZnS, PbS, CuS
◦ PbS, CuS
◦ MnS

Question 2

A solution may contain the following ions Ag+, Cu2+, Cd2+, Mn2+, Ni2+ and Na+. A white precipitate formed when 0.10 M NaCl was added and after this was removed the solution was treated with H2S gas under acidic conditions and no precipitate formed. When the solution was made basic and again treated with H2S gas a dark colored precipitate formed. If no further tests were made then what conclusions can you draw?
◦ possible ions present Ag+, Mn2+, Ni2+, Na+
◦ possible ions present Ag+, Cu2+, Cd2+, Na+
◦ possible ions present Ag+, Mn2+, Ni2+
◦ possible ions present Ag+, Cu2+, Cd2+
Chemistry ¦ McMurry, Fay, Robinson ¦ 7th Edition
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Marked as best answer by Capo on Feb 15, 2020

Natalie4ever

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Reply #1 on: Feb 15, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Capo

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Reply 2 on: Feb 15, 2020
Excellent

bbburns21

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Reply 3 on: Yesterday
:D TYSM

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