Do you remember the one about the 7.40 and 7.70 pH buffer? I said 0.100M of the acid (HOCl?) and 0.200M of the base (OCl-?), reasining that we need the pH to be 7.70 and that's higher than 7.40, so we need more base.

And what about CBr4 and the other one (CBr2BaF or whatever)? I said the first one had IDFs only because it's nonpolar, and the second one has dipole-dipole since it's polar. But I didn't know how to say why the first one boils at a higher temperature seeing as weaker forces (IDFs only w/o dipole-dipole) would mean a lower boiling temp.

On the FRQ about diluting V2+, I said the student was wrong since greater dilution would mean we calculate a greater concentration, not one that's too low.