can someone explain to me how to solve this . assume i know nothing.

6) Use Le Chatelier's Principle to indicate the direction of the shift. Explain your reasoning for choosing the direction. 2Fe(s)+3Cl2(g)2FeCl3(s)H=343kJ a. Increasing the pressure of Cl2 in the system. b. Decreasing the temperature from 50C to 10C. c. Adding a small amount of H2(g) to the system. H2(g) will react with the Cl2(g). Assume changes to the total pressure are negligible. d. Changing the reaction vessel volume from 5.0L to 7.0L. e. Doubling the amount of iron metal in the system