Chemistry

Problem

The reaction

2\,\text{HI}(g) \rightleftharpoons \text{H}_2(g) + \text{I}_2(g)

has

\Delta G^\circ = +2.60\,\text{kJ mol}^{-1}

298\,\text{K}

. In a vessel at

298\,\text{K}

the partial pressures are

P_{H_2} = 1.0\,\text{atm}

and

P_{I_2} = 1.0\,\text{atm}

. What is the MINIMUM partial pressure of HI (in atm) required to make the forward reaction spontaneous under these conditions? (

R = 8.314\,\text{J mol}^{-1}\,\text{K}^{-1}

) a)

3.0\,\text{atm}

1.7\,\text{atm}

0.60\,\text{atm}

0.35\,\text{atm}