#### Mixing and Solution: Example Problems

Try to solve these problems before watching the solutions in the screencasts.

##### Example Problem 1

One pound of a 20% H_{2}SO_{4} solution at 60°F was mixed with a half-pound of an 80% H_{2}SO_{4} solution at 60°F. How much heat must be removed to carry out this process isothermally?

##### Example Problem 3

2 lb_{m} of pure water at 100°F is mixed adiabatically with 1 lb_{m} of 60% H_{2}SO_{4} solution at 100°F. Find the outlet temperature of the mixture.

##### Example Problem 2

2 lb_{m} of pure water at 100°F is mixed isothermally with 1 lb_{m} of 60% H_{2}SO_{4} solution at 100°F. Find the heat release upon mixing.

##### Example Problem 4

A mixing tank is used to prepare a solution for a reaction. The concentration and flow rate of stream A is variable, thus flow meters and a detector are used to ensure a specific concentration leaving the mixing tank. Use the schematic and information below to help an operator determine appropriate equations to use in their control operations for this process.