The following chemical reaction is made to take place in a sealed reaction vessel whose temperature, pressure, and volume can all be adjusted:

H2(g) + Cl2(g) ↔ 2HCl(g).

Sufficient time is allowed to elapse so that equilibrium is established. Use LeChatlier's Principle to predict the direction that the equilibrium will shift (forward, reverse, or no change) if the system is subjected to the following stresses:

(a) removal of Cl2
(b) adition of HCl
(c) decreased pressure
(d) increased temperature
(e) addition of H2
(f) increased pressure
(g) addition of a catalyst
(h) decreased temperature
(i) increased system volume