1. Substances X, Y, and Z can all act as oxidizing agents. In this solution, X i

Question

1. Substances X, Y, and Z can all act as oxidizing agents. In this solution, X is red, Y is green, and Z is blue. In the reactions they undergo they are reduced to X-, Y-, and Z-, all of which are colorless. When a solution of X is mixed with one containing Y- ions, the color changes from red to green.

Which species is oxidized? ______

Which speces is reduced? _______

When a solution of X- is mixed with one containing Z- ions, the solution remains red.

Is X a better oxidizing agent than Y? _____

Is X a better oxidizing agent than Z? _____

Arrange X, Y, and Z in order of increasing strength as oxidizing agents.   

______________ > _____________ > ________________

weakest strongest

2. You are given a colorless unknown 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 of X, Y, and Z, write a simple produre (in the form of a flowchart) for determining the identity of the salt that is present in your unknown. (need help with this part)

Explanation / Answer

1.) X is mixed with Y- ions, the color changes from red to green :
X (red) & Y- (colorless) --> X- (colorless) & Y (green)

Answers:
Which species is oxidized? Y- is oxidized
which is reduced? X is reduced

When X is mixed with Z- ions, the solution remains red
X (red) & Z- (colorless) --> no reaction

Answers:
Is X a better oxidizing agent than Y? Yes
Is X a better oxidizing agent than Z? No
so, the order of increasing strength of oxidising agents is as follows--

Y<X<Z...

2.) To the salt solution add the blue solution of the best oxidizer "Z".
If there is no reaction and it stays blue the salt was NaZ.
if there is a reaction and it turns green then the salt was NaY.
if there is a reaction and it turns red then the salt was NaX.

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