In YBa_2 Cu_3 O_ 7-x , a superconducting oxide that got George...

\mathrm{YBa}_2 \mathrm{Cu}_3 \mathrm{O}_{7-\mathrm{x}}

, a superconducting oxide that got George Bednorz and Karl Muller the Nobel prize in 1986, Cu can exist in both +2 and +3 oxidation states and their proportion depends on the value of '

x

'. In

\mathrm{YBa}_2 \mathrm{Cu}_3 \mathrm{O}_{7-0.5}

Options

A0.5 moles of Cu are in +3 oxidation state
B $5 \%$ of Cu is in +3 oxidation state
CAll the Cu is in +3 oxidation state
DAll Cu is in +2 oxidation state

Correct answer

D. All Cu is in +2 oxidation state

Step-by-step solution

No Solution

Practice Redox Reactions on Quantrex Academy →

More from Redox Reactions

Which of the following cannot act as an oxidising agent? Olympiad workbook The table below gives the results of three titrations carried out with 0.200 M HCl to… Olympiad workbook Among the following, the reaction/s that can be classified as oxidation- reduction is… Olympiad workbook While doing titration, a student recorded a burette reading of 10.0 mL for the… Olympiad workbook Which of the following pairs of compounds can be stable while retaining the identity of… Olympiad workbook In the following reaction, the values of a, b and c , respectively are a F_2(~g)+b OH^… Olympiad workbook When 6.8 g of AgNO_3 completely reacts with H_3 PO_2 , metallic silver produced (g) and… Olympiad workbook Among (i) HCl , (ii) HOClO , (iii) HOClO_2 and (iv) HOClO_3 , which cannot undergo a… Olympiad workbook Full Redox Reactions list All Olympiad workbook PYQs