The equilibrium constant for the following reaction is 49 at 450oC. If 0.22 mol of I2, 0.22 mol of H2 and 0.66 mol of HI were put in a evacuated 1 litre container.
Then, the correct statement will be:
Reaction will proceed in forward direction until equilibrium is established.
Reaction will proceed in backward direction until equilibrium is established.
Reaction is already at equilibrium.
The correct option is A Reaction will proceed in forward direction until equilibrium is established.
Given, nH2=0.22, nI2=0.2, nHI=0.66V=1L
The concentration given in question are not necessarily the equilibrium concentrations.
Calculating reaction quotient Qc from these concentrations :
The reaction is
For this reaction, Qc=[HI]2[H2][I2]
putting the value,
Qc=9.0 but Kc=49 (Given), which is greater than Qc
Hence, the reaction will move in forward direction.