Consider the following Reaction and answer the questions based on the choices (A-F) given:

C(s) + H2O(g) <-------> CO(g) + H2(g) change of H > 0

A. increase C. no change E. shift right
B. decrease D. shift left F. cannot be determined

_____ 1. What will be the effect upon the equilibrium if the pressure on the system is increased?
_____ 2. What will be the effect upon the concentration of CO if the concentration of H2 is decreased?
_____ 3. What will be the effect upon the equilibrium if the concentration of H2 is decreased?
_____ 4. What will be the effect upon the concentration of H2O if the concentration of H2 is increased?
_____ 5. What will be the effect upon the equilibrium if H2 is removed and more C is added?
_____ 6. What will be the effect upon the concentration of H2 if the amount of C is increased?
_____ 7. What will be the effect upon the equilibrium if the temperature and the concentration of H2 increases?
_____ 8. What will be the effect upon the concentration of CO if the temperature is increased?
_____ 9. What will be the effect upon the equilibrium if the concentration of H2O is decreased and CO is
increased?
_____ 10. What will be the effect upon the equilibrium if a catalyst is added?

I have answers but I would appreciate a second opinion; provide explanation for choice