15 - 2 HI(g) : H2(g) + 12(e) In the above reaction, 3 moles of HI(g) are placed in a constant volume vessel under 12 atmospheric pressure. When equilibrium is reached at constant temperature, what will be the partial pressure of Hilp) if mol fraction of Hy is 1/67 a) 4 atm. 1 atm. c) 3 atm. OOO 8 atm. e) 6 atm