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introduction to chemical engineering ch (5).pdf


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Chapter 5 – Answer Key, Introduction to Chemical Engineering: Tools for Today and Tomorrow
Reading Question 5.3:
Equation (e) of Example 5.7 is an application of the following relationship found in the
Guidelines for Solving Material Balance Problems Involving Multiple Species:

In this case, butene is being consumed. The information in the problem statement that 84%
of the butene is converted to ethylene was used to provide the fractional conversion (X) of
0.84 for the butene. The mass flow rate and molecular weight of butene were also used in the
equation.
rconsumption, butene is the number of moles of butene per time that are converted to ethylene in the
process.