Be sure to answer all parts. Complete the following statements for the complex ion [Co(en)2(H2O)CN]2 . (a) en is the abbreviation for (b) The oxidation number of Co is (c) The coordination number of Co is (d) segseg is a bidentate ligand. (en) Co(en)2 CN H2O

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.

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