Consider the two tanks as shown in (Figure 11-2), which are connected in series. The first tank has a volume of salt water Vo with a concentration of Co. The second tank whose volume is Vo . It was empty at first. At moment t 0, pure water enters the first tank with a volumetric flow rate of v and at the same time, it is pumped from the first tank to the second tank with an intensity v. At this time, no fluid leaves the second tank. C, v Vo ob Vo Figure 11-2 A) Prove that the changes in salt concentration in the first tank are obtained from the following equation. C1 = exp (- Vo C2 vt

Consider the two tanks as shown in (Figure 11-2), which are connected in series. The first tank has a volume of salt water Vo with a concentration of Co. The second tank whose volume is Vo . It was empty at first. At moment t 0, pure water enters the first tank with a volumetric flow rate of v and at the same time, it is pumped from the first tank to the second tank with an intensity v. At this time, no fluid leaves the second tank. C, v Vo ob Vo Figure 11-2 A) Prove that the changes in salt concentration in the first tank are obtained from the following equation. C1 = exp (- Vo C2 vt