Of you were to increase the polarity of the solvent system, what would happen to the retention factors of the spots on the silica gel tlc plate? (2 pt)
a. only nonpolar compounds would have a larger retention factor
b. only polar compounds would have a larger retention factor
c. all spots would have a larger retention factor and elute in the same order
d. all spots would have a smaller retention factor and elute in the same order

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.