Question

The following facts are available

2X^– + Y₂® 2Y^– + X₂ ; 2W^– + Y₂® No reaction

2Z^– + X₂® 2X^– + Z₂

Which of the following is correct ?

• A. $E_{W^{-}/W_{2}}^{º}$>$E_{Y^{-}/Y_{2}}^{º}$>$E_{X^{-}/X_{2}}^{º}$>$E_{Z^{-}/Z_{2}}^{º}$
• B. $E_{W^{-}/W_{2}}^{º}$<$E_{Y^{-}/Y_{2}}^{º}$<$E_{X^{-}/X_{2}}^{º}$<$E_{Z^{-}/Z_{2}}^{º}$
• C. $E_{W^{-}/W_{2}}^{º}$<$E_{Y^{-}/Y_{2}}^{º}$>$E_{X^{-}/X_{2}}^{º}$>$E_{Z^{-}/Z_{2}}^{º}$
• D. $E_{W^{-}/W_{2}}^{º}$>$E_{Y^{-}/Y_{2}}^{º}$<$E_{X^{-}/X_{2}}^{º}$<$E_{Z^{-}/Z_{2}}^{º}$

Answer 1

Answer: (B)

$E_{W^{-}/W_{2}}^{º}$<$E_{Y^{-}/Y_{2}}^{º}$<$E_{X^{-}/X_{2}}^{º}$<$E_{Z^{-}/Z_{2}}^{º}$

Answer 2

2X^– + Y₂ ® 2Y^– + X₂ possible reaction$E_{Y_{2}/Y^{-}}^{º}$

> $E_{X_{2}/X^{-}}^{º}$

2W^– + Y₂ ® W₂ + 2Y^– no reaction$E_{Y_{2}/Y^{-}}^{º}$ < $E_{W_{2}/W^{-}}^{º}$

2Z^– + X₂ ® 2X^– + Z₂ possible reaction$E_{X_{2}/X^{-}}^{º}$ > $E_{Z_{2}/Z^{-}}^{º}$

$E_{W_{2}/W^{-}}^{º}$ > $E_{Y_{2}/Y^{-}}^{º}$ > $E_{X_{2}/X^{-}}^{º}$ > $E_{Z_{2}/Z^{-}}^{º}$

\ $E_{Z^{-}/Z_{2}}^{º}$ > $E_{X^{–}/X_{2}}^{º}$ > $E_{Y^{–}/Y_{2}}^{º}$ > $E_{W^{–}/W_{2}}^{º}$