The specific conductance (K) of an electrolyte of 0.1 N concentration is related to equivalent conductance (∧e) by the following formula.
The conductivity of a pure semiconductor is roughly proportional to T3/2 e−ΔE/2KT where ΔE is the band gap. The band gap for germanium is 0.74 eV at 4 K and 0.67 eV at 300 K. By what factor does the conductivity of pure germanium increase as the temperature is raised from 4 K to 300 K ?