Redox Reactions And Electrochemistry Ques 365

Question: In the compound $ YBa_2Cu_3O_7 $ which shows superconductivity, what is the oxidation state of cu- Assume the rare earth element yttrium is in its usual +3 oxidation state.

Options:

A) $ +\frac{7}{3} $

B) $ -\frac{7}{3} $

C) $ +\frac{5}{3} $

D) $ -\frac{5}{3} $

Show Answer

Answer:

Correct Answer: A

Solution:

[a] $ (YBa_2Cu_3O_7) $ $ 3+(2\times 2)+3x-14=0 $
$ \therefore x=+\frac{7}{3} $



NCERT Chapter Video Solution

Dual Pane