Equilibrium relationship for adsorption of Phenol by Carbon is given by q=1.3*C, where q=amount of phenol adsorbed in mg Phenol per gram of Carbon, C= concentration of Phenol in mg per kg of water in solution. It is desired to treat 1 litre of a solution with phenol concentration of 200mg/kg water in 2 stage countercurrent treatment as sketched below. Feed Carbon is pure (10 g) and assume that 1 litre of solution contains 1 kg water. Determine final solution concentration (C1) in mg-Phenol/kg-water. Assume basis as one hour of operation, and that 1 litre solution =1 kg water, no need to use graph