For the chemical reaction X Y , the standard reaction Gibbs energy depends on temperature T (in K) as `Delta_rG^0` ( in kJ `mol^(-1)` ) = `120-3/8`T . The major component of the reaction mixture at T is

Options

A. X if T 315 K
B. Y if T 300 K
C. Y if T 280 K
D. X if T 350 K

Answer

A

Explanation

`Delta_(r) G^(@) =120^(@) -(3)/(8) T rArr" For " Delta_(r )G^(@) =0, T=320 k`
Above `320 k, Delta _(r )G^(@)` is - ve, major component would be Y. While below `320k, Delta_(r)G^(@)` is + ve and major component would be x.