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# The article “Evaluating Vent Manifold Inerting ISBN: 9780073401331 38

## Solution for problem 13E Chapter 8.1

Statistics for Engineers and Scientists | 4th Edition

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Problem 13E

The article “Evaluating Vent Manifold Inerting Requirements: Flash Point Modeling for Organic Acid-Water Mixtures” (R- Garland and M. Malcolm, Process Safety Progress, 2002:254-260) presents a model to predict the flash point (in °F) of a mixture of water, acetic acid, propionic acid, and butyric acid from the concentrations (in weight %) of the three acids. The results are as follows. The variable “Butyric Acid * Acetic Acid” is the interaction between butyric acid concentration and acetic acid concentration. a. Predict the flash point for a mixture that is 30% acetic acid, 35% propionic acid, and 30% butyric acid. (Note: In the model, 30% is represented by 30, not by 0.30.)

b. Someone asks by how much the predicted flash point will change if the concentration of acetic acid is increased by 10% while the other concentrations are kept constant. Is it possible to answer this question? If so, answer it. If not, explain why not.

c. Someone asks by how much the predicted flash point will change if the concentration of propionic acid is increased by 10% while the other concentrations are kept constant. Is it possible to answer this question? If so, answer it. If not, explain why not.

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Week 1 0 Notes y reannarose L 1 Chemistry 1 12: General C hemistry II Week 1 0, pril 3rd ‐ Apr th, 017 Exam 3 ednesday, April 1 9th, 2017 17.2:...

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##### ISBN: 9780073401331

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