Chemistry 30

For the following system at equilibrium:

H_{2 (g)} + I_{2 (g)} ↔ 2 HI _(g)

a. Predict the shift in equilibrium when more HI_(g) is added to the system.

b. How will the concentration of I₂ change?

For the reaction below, predict the direction the equilibrium will shift given the following changes. Temperature and volume are held constant.

2 NO_{2 (g)} + 7 H_{2 (g)} ↔ 2 NH_{3 (g)} + 4 H₂O_(g)

a. addition of ammonia

b. removal of nitrogen dioxide

c. removal of water vapour

d. addition of hydrogen

At a particular temperature, the following reaction has an equilibrium constant, K_eq of 0.18

PCl_{3 (g)} + Cl_{2 (g)} ↔ PCl_{5 (g)}

More PCl₃ is added to the system. Will the value of K_eq increase or decrease?