Critical behaviour of electrical resistivity in 5 binary liquid systems

Abstract

For five binary liquid systems CS₂+CH₃CN, CS₂+CH₃NO₂, CS₂+(CH₃CO)₂O, C6H12+(CH3CO)2O, n-C₇H₁₆+(CH₃CO)₂O, the electrical resistance has been measured near the critical solution temperatures. The behaviour is universal. Below Tc, the conductivities of the two phases follow |σ₁-σ₂|~ ε ^β , where ε =|T-T_c|T_c with β ≈ 0.35. In the one phase region dR/dT ~ ε - b with b≈0.35± 0.1 and dR^c/dT is positive in some cases and negative in others.