Combustion Analysis

Course Content
Introduction to fundamental concepts of chemistry
0/18
Relative Atomic mass
Empirical formula and Molecular Formula
Combustion Analysis
Concept of mole
Avogadro’s number
Molar Volume
Stoichiometry
Limiting reactant
Percentage yield
Relative Atomic Mass
Empirical and Molecular Formula
Combustion Analysis
Concept of Mole
Avogadro's Number
Molar Volume
Test
check
Biological Molecules
Atomic Structure
Gases
Liquids
Solids
Chemical Equilibrium
Reaction Kinetics
Thermo-chemistry and Energetics of chemical reactions
Electrochemistry
Chemical bonding
S and p block elements
Transition Elements
Fundamental principles of organic chemistry
Chemistry of Hydrocarbons
Alkyl halides
Alcohols & phenols
Aldehydes and Ketones
Carboxylic acid
Macromolecules
MDCAT Chemistry Mastery

Empirical Formula From Combustion Analysis:
Combustion analysis is also called as elemental analysis. It is used for qualitative and quantitative analysis of hydrocarbons or organic compounds containing C, H and O only.
Combustion analysis is used to find out the percentage composition of an organic compound by combusting it in excess supply of oxygen.
Experiment:
A weighed sample of the organic compound is placed in the combustion tube. This combustion tube is fitted in a furnace. Oxygen is supplied to burn the compound. Hydrogen is converted to H2O and carbon is converted to CO2. These gases are absorbed in Mg (CIO4)2 and 50% KOH respectively.


Amount of CO2 and H2O
• The difference in the masses of these absorbers gives us the amounts of H2O and CO2 produced.
• The amount of oxygen is determined by the method of difference.
Calculations
(i) % Hydrogen
(ii) % Carbon
(iii) % Oxygen = 100 – (% of C + % of H) ———– method of difference.

Previous
Next