Figure depicts a chemical exchange process consisting of a series of reactors in which a gas following from left to right is passed over a liquid flowing from right to left. The transfer of a chemical from the gas into the liquid occurs at a rate that is proportional to the difference between the gas and liquid concentrations in each reactor. At steady state, a mass balance for the first reactor can be written for the gas as

QGcG0 – QGcG1 + D(cL1 - cGl) = 0

And for the liquid as

QLcL2 – QLcL1 + D(cG1 – cL1) = 0

Where QG and QL are the gas and liquid flow rates, respectively, and D = the gas-liquid exchange rate. Similar balances can be written for the other reactors. Solve for the concentrations given the following values: QG = 2, QL = 1, D = 0.8, CG0 = 100, CL6 = 10.