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Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
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combustion reactions.  

### Composition on Wet and Dry Bases

#### Problem Statement

1) **Wet Basis → Dry Basis:**

A stack gas contains 60% N₂, 15% CO₂, 10% O₂, and the balance is H₂O. Calculate the dry basis composition of the gases.

2) **Dry Basis → Wet Basis:**

Air (Orsat analysis) technique for stack gas analysis yields the following dry basis composition:

- N₂: 65%
- CO₂: 12%
- O₂: 18%
- CO: 5%

A humidity measurement shows that the amount of H₂O in the stack gas is 0.0381 lbm/lbm dry air. Calculate the stack gas composition on a wet basis.

#### Explanation and Methodology

When dealing with gas compositions, it's often necessary to convert between wet and dry basis methods. 

- **Wet Basis**: The composition is based on the total gas volume, including water vapor.
- **Dry Basis**: The composition is based only on the non-water components of the gas.

These conversions are essential for various industrial processes to analyze and control emissions accurately.
Transcribed Image Text:### Composition on Wet and Dry Bases #### Problem Statement 1) **Wet Basis → Dry Basis:** A stack gas contains 60% N₂, 15% CO₂, 10% O₂, and the balance is H₂O. Calculate the dry basis composition of the gases. 2) **Dry Basis → Wet Basis:** Air (Orsat analysis) technique for stack gas analysis yields the following dry basis composition: - N₂: 65% - CO₂: 12% - O₂: 18% - CO: 5% A humidity measurement shows that the amount of H₂O in the stack gas is 0.0381 lbm/lbm dry air. Calculate the stack gas composition on a wet basis. #### Explanation and Methodology When dealing with gas compositions, it's often necessary to convert between wet and dry basis methods. - **Wet Basis**: The composition is based on the total gas volume, including water vapor. - **Dry Basis**: The composition is based only on the non-water components of the gas. These conversions are essential for various industrial processes to analyze and control emissions accurately.
Expert Solution
Step 1: Given data:

bold italic Q bold italic u bold italic e bold italic s bold italic t bold italic i bold italic o bold italic n bold space bold 1 bold colon
O n space w e t space b a s i s.
T h e space m o l a r space c o m p o s i t i o n space o f space t h e space g a s space i n space t h e space c o n t a i n e r space i s colon
60.0 percent sign space N subscript 2
15.0 percent sign space C O subscript 2
10.0 percent sign space O subscript 2
15 percent sign space H subscript 2 O

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