A mixture of 2.50e-02 mol of CH4, 4.74e-02 mol of H2S, 3.01e-02 mol of CS2, and 7.30e-02 mol of H2 is placed in a 1.0-L steel pressure vessel at 1654 K. The following equilibrium is established:
CH4(g) + 2 H2S(g) CS2(g) + 4 H2(g)
At equilibrium 4.51e-02 mol of H2 is found in the reaction mixture. Calculate the equilibrium pressures of all gases in the reaction vessel and the value of KP for the reaction. Pick the correct statement from the multiple choices. Use the value R = 0.0821 L-atm/mol-K for the gas constant.