The transference numbers of aqueous hydrobromic acid

The transference nos. of aq. hydrobromic acid at molalities up to 7 mol kg-1 at 25° have been redetd. from the electromotive forces Et of the transference cell Pt|H2|HBr(m1)||HBr(m2)|H2|Pt, following the recently modified general treatment which implies a functional correlation between bromide ion transference no. tBR, water transference no. tw, and primary hydration no. h of hydrobromic acid.