Question

1-At 1130°C, the equilibrium constant (Kc) for the reaction 2H2S(g) ⇌ 2H2(g) + S2(g) is 2.25 × 10−4. If [H2S] = 4.70 × 10−3 M and [H2] = 1.50 × 10−3 M, calculate [S2] ? M (Enter your answer in scientific notation.)

2-The equilibrium constant K_c for the reaction H₂(g) + CO₂(g) ⇌ H₂O(g) + CO(g) is 4.2 at 1650°C. Initially 0.86 mol H₂ and 0.86 mol CO₂ are injected into a 4.8−L flask. Calculate the concentration of each species at equilibrium.

Equilibrium concentration of H₂:?M

Equilibrium concentration of CO₂:? M

3-The equilibrium constant K_c for the equation 2H₂(g) + CO(g) ⇌ CH₃OH(g) is 11 at a certain temperature. If there are 2.63×10^−2 moles of H₂ and 7.15 ×10^−3 moles of CH₃OH at equilibrium in a 6.29−L flask, what is the concentration of CO?