In a closed rigid vessel, 2SO2(g) + O2(g) 2SO3(g) is at equilibrium. More SO2 is added at constant temperature. Compared with the original equilibrium, at the new equilibrium

[SO3] is higher, [O2] is lower and K_c is unchanged

[SO3] and [O2] are both higher and K_c is unchanged

[SO3] is higher, [O2] is lower and K_c is unchanged

[SO3] is higher, [O2] is lower and K_c is higher

[SO3] is lower, [O2] is higher and K_c is unchanged

JEE Main levelSingle correct optionDifficulty 2 of 3ce023

In a closed rigid vessel, $2 SO X_{2} (g) + O X_{2} (g) 2 SO X_{3} (g)$ is at equilibrium. More $SO X_{2}$ is added at constant temperature. Compared with the original equilibrium, at the new equilibrium

Added

SO X_{2}

makes

Q_{c} < K_{c}

, so the system shifts forward, consuming some

O X_{2}

and forming more

SO X_{3}

K_{c}

depends only on temperature and stays the same.