Onsider the chemical system: H2(g)+I2(g)>2HI(g)

5.89 mol H2, 5.89 mol I2, and 11.8 mol HI are placed in a closed 10.00 L container maintained at 448°C. At equilibrium, the concentrations of H2, I2, and HI are 0.258 , 0.258 , and 1.84 M.

A. The ratio

[HI]2 / [H2][I2]

represents: ?

choose one or more:

1. the law of mass action.

2. the mass action expression.

3. the equilibrium constant expression.

4. the equilibrium constant.

5. none of these.

B. The value, 4.01 , represents: ?

choose one or more:

1. the law of mass action.

2. the mass action expression.

3. the equilibrium constant expression.

4. the equilibrium constant.

5. none of these.

C. The value, 50.9 , represents: ?

choose one or more:

1. the law of mass action.

2. the mass action expression.

3. the equilibrium constant expression.

4. the equilibrium constant.

5. none of these.