Absorption with chemical reaction. (a) Rework the problem discussed in the text in s18.4, but take z = 0 to be the bottom of the beaker and z = L at the gas-liquid interface. (b) In solving Eq. 18.4-7, we took the solution to be of the sum of two hyperbolic functions. Try solving the problem by using the equally valid solution I? = C, exp(c$t) + C2 exp(-&I. (c) In what way do the results in Eqs. 18.4-10 and 12 simplify for very large L? For very small L? Interpret the results physically.