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A reaction vessel is charged with hydrogen iodide, which partially decomposes to molecular hydrogen and iodine: 2 H I ( g ) ⟺ H 2 ( g ) + I 2 ( g ) When the system comes to equilibrium at 425°C, P H I = 0.708 atm and P H 2 = P I 2 = 0.0960 atm. What is the value of Kp at this temperature?\ 1.84 x 10-2 6.80 x 10-2 54.3 1.30 x 10-2 Kp cannot be calculated for this gas reaction when the volume of the reaction vessel is not given.