In the adsorption experiment, a graph between log xmv/s log P was found to be linear with a slope of 45º. The intercept on log xm axis was found to be 0.3010. The amount of gas adsorbed per gram of charcoal under a pressure of 0.5 atmosphere is

In the adsorption .....According to freundlich equation.xm=KP1/n or log=xm=log⁡K+1nlog⁡P Plot of log⁡xm vs log⁡P is linear with slope 1n and intercept =log⁡K. Thus. 1n=tan⁡θ=tan⁡45∘=1 or  n=1log K = 0.3010 or K = 2at p = 0.5 atm amount of the gas adsorbed per gram of charcoal.Xm=KP1/n=2×(0.5)1=1