Question

1. The following reaction was performed in a sealed vessel at 763 ∘C : H2(g)+I2(g)⇌2HI(g) Initially, only H2 and I2 were present at concentrations of [H2]=3.30M and [I2]=2.40M. The equilibrium concentration of I2 is 0.0700 M . What is the equilibrium constant, Kc, for the reaction at this temperature? Express your answer numerically.

2.A mixture initially contains A, B, and C in the following concentrations: [A] = 0.700 M , [B] = 1.40 M, and [C] = 0.350 M . The following reaction occurs and equilibrium is established:

A+2B⇌C

At equilibrium, [A] = 0.540 M and [C] = 0.510 M . Calculate the value of the equilibrium constant, Kc.