4) The degree of dissociation of I2 molecule at 1000 ° C and under 1.0 atm is 40 % by volume. If the dissociation is reduced to 20 % at the same temperature, the total equilibrium pressure on the gas will be? A ) 1 . 57 a t m B ) 2 . 57 a t m C ) 3 . 57 a t m D ) 4 . 57 a t m Share with your friends Share 17 Chandrakant answered this △G⊝ = −RT lnKc Dear Student, Regards. 44 View Full Answer