What two functions does NaOH solution perform in this Reaction [Cu(H 2 O) 6 ] 2+
ID: 892048 • Letter: W
Question
What two functions does NaOH solution perform in this Reaction
[Cu(H2O)6]2+(aq) + 2OH- (aq) --> Cu(OH)2(s)
Oxidizes the remaining copper to insure it precipitates.
Reduces the copper ions, causing them to precipitate.
Provides a buffer to maintain the pH of the solution.
Provides the hydroxide ions needed to precipitate the copper.
Neutralizes the acid from Reaction I.
A)Oxidizes the remaining copper to insure it precipitates.
B)Reduces the copper ions, causing them to precipitate.
C)Provides a buffer to maintain the pH of the solution.
D)Provides the hydroxide ions needed to precipitate the copper.
E)Neutralizes the acid from Reaction I.
Explanation / Answer
D) is the option as NaOH can give hydroxyl ions to form precipitate. This is because Cu(OH)2 is an insoluble precipitate.
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