Calculate the number of milliliters of 0.656 M KOH required to precipitate all of the Co2 ions in 187 mL of 0.745 M Co(NO3)2 solution as Co(OH)2. The equation for the reaction is:

when the pressure is increased, there will be a shift to the reactants side. decreasing the volume will increase pressure. when you decrease the volume, the gaseous species get more tightly packed of the concentrations of gaseous species increase.

le chatelier's principle says that the system wants to undo this concentration increase so it can decrease pressure.

since the reactants only have 1 mol of gas (only pcl5) and the products have 2 mol of gas (both pcl3 and cl2), it shifts to reactants to decrease concentration, thereby lowering the pressure

chemical reactions will occur

the products are more stable than the reactants

is the right answer