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# Combustion Apparatus

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Sections
Empirical Formula
Molecular Formula
Combustion Analysis
Combustion Apparatus
Polyatomic Ions
Naming Ionic Compounds
Writing Ionic Compounds
Naming Ionic Hydrates
Naming Acids
Naming Molecular Compounds
Balancing Chemical Equations
Stoichiometry
Limiting Reagent
Percent Yield
Mass Percent
Functional Groups in Chemistry

A Combustion Apparatus vaporizes a sample into gases to later determine its formula.

###### Combustion Apparatus

Concept #1: Combustion Apparatus

Example #1: The compound that makes up an experimental jet fuel contains C, H and O. Suppose that in one experiment the combustion of 11.5 g of the liquid gave the following results:

Mass of CO2 absorber before combustion = 10.815 g

Mass of CO2 absorber after combustion = 32.815 g

Mass of H2O absorber before combustion = 10.110 g

Mass of H2O absorber after combustion = 23.610 g

Find the empirical formula of the unknown liquid.

Practice: Vitamin C (MW = 176.12 g/mol) is a compound containing C, H, and O found in citrus fruits. When a 1.000 g sample of Vitamin C is placed inside a combustion chamber and burned, the following information is obtained:

Mass of CO2 absorber before combustion = 83.85 g

Mass of CO2 absorber after combustion = 85.35 g

Mass of H2O absorber before combustion = 37.55 g

Mass of H2O absorber after combustion = 37.96 g

What is the molecular formula of Vitamin C?