Understanding Combustion Products — Lesson 5

This lesson covers the analysis of combustion products of TK C10 H22. It delves into the concept of equivalence ratio and its implications on the combustion process. The lesson explains how to write the chemical equation for combustion and how to balance the equation. It also introduces the concept of the water-gas shift reaction and how it can be used to balance the equation. The lesson further explains how to calculate the equilibrium constant (KP) and how to solve the quadratic equation to find the composition of the combustion products. An example problem is solved to illustrate these concepts.

Video Highlights

00:49 - Explanation of the concept of stock metric
06:24 - Explanation of how to calculate KP
09:34 - Explanation of how to calculate the free energy
12:52 - Explanation of how to rewrite the equations to eliminate some variables
15:15 - Explanation of the final composition

Key Takeaways

- The equivalence ratio (Fe) is a crucial factor in combustion, affecting the composition of the combustion products.
- The water-gas shift reaction is a reversible reaction that can be used to balance the combustion equation.
- The equilibrium constant (KP) can be calculated using the Gibbs free energy of formation.
- The composition of the combustion products can be determined by solving a quadratic equation derived from the balanced combustion equation.