7. Will methylamine (CH3NH2) be a monodentate or a bidentate ligand? With which of its atoms will it bind to a metal ion?
Methylamine will be a monodentate ligand because it is capable of only bonding to one metal atom. The atom of which it will bind with would be the nitrogen (N) atom.
19. Suppose 0.010 mol of each of the following compounds is dissolved (seperately) in 1.0 L of water: KNO3, [Co(NH3)6]Cl3, Na2[PtCl6], [Cu(NH3)2Cl2]. Rank the resulting four solution in order of conductivity, from lowest to highest.
Using the given information, we conclude that the same amount of each chemical is dissolved into water, 0.010 mol to be exact. The conductivity of each solution is based on the number of ions that are present in the given solution. The lowest conductivity would be given by the [Cu(NH3)2Cl2] because it does not have any ions dissolved, therefore it is not conductive at all. The next highest conductivity would be given by the KNO3 because when dissolved in water there are two mol of ions, K+ and NO3-. The next highest conductive solution would be Na2[PtCl6] because it has three mol of ions dissolved in the solution. There are two mol of Na+ and one mole of [PtCl6]-. The last, and most conductive, solution would be [Co(NH3)6]Cl3 because it has four mol of ions dissolved within the solution. There are one mole of [Co(NH3)6]+ and three mol of Cl-.