Liquid Hydrogen Chloride. Electrical Conductance and Dielectric Constant

Liquid hydrogen chloride has a specific electrical conductivity of 0.35×10^—8 reciprocal ohms at —85°C. The temperature coefficient is negative: —0.65×10^—10 in the range from —84°C to —64°C. The molecular conductivity at infinite dilution is estimated to be 184 (—85°C) and 192 (—53°C). The ionization constant is 0.083×10^—16 at —78°C and 0.051×10^—16 at —68°C. The change in heat content of the ionization reaction is: $$\text{(x+y+2)}\mathrm{HCl}\mathrm{\to (}{\mathrm{H}}_2\mathrm{Cl}·{\mathrm{HCl}}_x{)}^{+}\mathrm{+(}\mathrm{Cl}·{\mathrm{HCl}}_y{)}^{-}{\mathrm{,\hspace{0.17em}\hspace{0.17em}\Delta H}}_{195}\text{≐−3500\hspace{0.17em}}\mathrm{cal}.$$