Browse Questions

# The following facts are available.$\begin{array}{1 1}2X^-+Y_2\rightarrow 2Y^-+X_2\\2W^-+Y_2\rightarrow\text{No reaction}\\2Z^-+X_2\rightarrow 2X^-+Z_2\end{array}$ Which of the following statements is correct?

$\begin{array}{1 1}E^{\large\circ}_{W-|W_2} > E^{\large\circ}_{Y-|Y_2} > E^{\large\circ}_{X-|X_2} > E^{\large\circ}_{Z-|Z_2}\\E^{\large\circ}_{W-|W_2} < E^{\large\circ}_{Y-|Y_2} < E^{\large\circ}_{X-|X_2} < E^{\large\circ}_{Z-|Z_2}\\E^{\large\circ}_{W-1W_2} < E^{\large\circ}_{Y-|Y_2} > E^{\large\circ}_{X-|X_2} > E^{\large\circ}_{Z-|Z_2}\\E^{\large\circ}_{W-|W_2} > E^{\large\circ}_{Y-|Y_2} < E^{\large\circ}_{X-|X_2} < E^{\large\circ}_{Z-|Z_2}\end{array}$

Answer : $E^{\large\circ}_{W-|W_2} > E^{\large\circ}_{Y-|Y_2} > E^{\large\circ}_{X-|X_2} > E^{\large\circ}_{Z-|Z_2}$
From the first reaction,we conclude $E_{Y-|Y_2} > E_{X-|X_2}$
From the first reaction,we conclude $E_{W-|W_2} > E_{Y-|Y_2}$
From the third reaction,we conclude $E_{X-|X_2} > E_{Z-|Z_2}$
Hence,$E^{\large\circ}_{W-|W_2} > E^{\large\circ}_{Y-|Y_2} > E^{\large\circ}_{X-|X_2} > E^{\large\circ}_{Z-|Z_2}$