Standard Gibb's free energy change for isomerization reaction cis-2-pentene $ightleftharpoons…
Standard Gibb's free energy change for isomerization reaction cis-2-pentene $ightleftharpoons \operatorname{trans}-2$ -pentene is $-3.67 \mathrm{~kJ} / \mathrm{mol}$ at $400 \mathrm{~K}$. If more trans-2pentene is added to the reaction vessel, then
more cis-2-pentene is formed
equilibrium remains unaffected
additional trans-2-pentene is formed
equilibrium is shifted in forward direction
Solution
If more trans-2-pentene is added, then 1 ts concentration in right hand side will increase. But in order to maintain the $\mathrm{K}$ constant, concentration of cis-2-pentene will also increase. Therefore more cis-2pentene will be formed.