Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter20: Organic Chemistry
Section: Chapter Questions
Problem 28E: Acetylene is a very weak acid; however, it will react with moist silver(I) oxide and form water and...
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Question
The photographs below (a) show what occurs when a solution of iron(III) nitrate is
treated with a few drops of aqueous potassium thiocyanate. The nearly colorless
iron(III) ion is converted to a red [Fe(H2O)5SCN)
2+
ion. (This is a classic test for the
presence of iron(III) ions in solution.)
[Fe(H2O)6
]
3+
(aq) + SCN
−
(aq) ⇄ [Fe(H2O)5SCN]
2+
(aq) + H2O(ℓ)
(a) As more KSCN is added to the solution, the color becomes even more red.
Explain this observation.
(b) Silver ions form a white precipitate with SCN
−
ions. What would you observe
on adding a few drops of aqueous silver nitrate to a red solution of [Fe(H2O)5 Explain your observations?
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Chemistry by OpenStax (2015-05-04)
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ISBN:
9781938168390
Author:
Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
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OpenStax
Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:
9781938168390
Author:
Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:
OpenStax