In the Freundlich adsorption isotherm, the value of x/m is 0.4 under a pressure of 0.2 atm. Calculate the value the intercept.

Explanation

According to Freundlich adsorption isotherm,
log (x/m) = log k + 1/n log p
log (x/m) = log (0.4) = (-0.398),
1/n = tan `45^(@)` = 1,
log p = log (0.2) = (-0.6990)
(-0.398) = log k + (1) `xx` (-0.6990)
log k (intercept) = 0.6990 - 0.398 = 0.301