Answer to Question #236905 in Chemical Engineering for Sen. Adeleke Olumi

Question #236905
A tank contains 10m^3 of free water, brine having a concentration of 15kgsalt/m^3 is sent into the tank at the rate of 200litres/min. The mixture is kept uniform by mixing and runs out at the rate of 100litres/min. What will be the exit brine concentration when the tank contains 15m^3 of brine
1
Expert's answer
2021-09-15T02:13:42-0400

initial amount of salt =


rate of pumping in = 200L/min


Let A be amount of salt at any time t,

then



R is rate of flow.




Hence equation of state will be,



solving equation,







applying condition, A=20 at t=0



Hence desired equation of the state is given by,


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