Substances X,Y and Z can all act as oxidizing agents. In Colution X is Violet Y
ID: 480699 • Letter: S
Question
Substances X,Y and Z can all act as oxidizing agents. In Colution X is Violet Y is Yello and Z is green. In the reactions they undergo thay are reduced to X- Y- and Z-, all of which are colorless. When a solution of Y is mixed with one containg X- ions the color changes from yellow to violet.
What Species Is oxidized? (X-)
Which Species is reduced(Y).
When a soulton of Y is mixed with one containing Z- ions, the solution remains yellow.
Is Y a better oxidizing agent than Z?
Is Y a better oxidizing agent than X?
Arrange X, Y, and Z in order of oxidizing strength from weakes to strongest.
2. You are given a colorless unkown solution that contains one salt from the following set: NaX NaY NaZ. In solution, each salt dissociates completely into the Na+ ion and the anion X- Y- or Z- whose properties are given in question 1. The Na+ ion is inert. Assuming you have access to solutions X, Y, and Z write a simple procedure in the form a flowchart for determining the identifity of the salt that is present in your unkown please show work. Thank you.
Explanation / Answer
X is mixed with Y- ions, the color changes from green to blue:
X (green) & Y- (colorless) --> X- (colorless) & Y (blue)
answers:
Which species is oxidized?.... Y- is oxidized
which is reduced? .... .... .... X is reduced
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When X is mixed with Z- ions, the solution remains green
X (green) & Z- (colorless) --> no reaction
answers:
Is X a better oxidizing agent than Y?.....Yes
Is X a better oxidizing agent than Z? .... No
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to the salt solution add the orange solution of the best oxidizer "Z"...
if there is no reaction, & it stays orange,... the salt was NaZ
if there is a reaction, & it turns blue, ... the salt was NaY
if there is a reaction , & it turns green, the salt was NaX