Predict the effect that decreasing pressure would have on each of the following reaction systems at equilibrium.

Predict the effect of each of the following on the indicated equilibrium system in terms of which reaction will be favored

H2(g)+Cl2(g)<=>2HCl(g) +184 kJ  addition of Cl2  removal of HCl  increased pressure  decreased temperature removal of H2  decreased pressure  addition of a catalyst  increased temperature  decreased system volume

im sorry i am not sure if this is the answer you are looking for

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.