Solutions for engineering chemistry I

1. WELCOME

2. SOLUTIONS
Solutions are actually a homogeneous
mixture of two or more substances

3. CLASSIFICATION OF SOLUTIONS
Based on the number of components, solutions
can be classified in to different types
Binary solution – 2 components
Ternary solutions – 3 components
Quaternary solutions – 4 components
Many components – Polynery solutions

4. Part of a solution
• Solvent – The component which is present in
larger amounts
• Solute – The component which is present in
minimum amount

5. Types of solutions
In actual practice nine type of solutions are
there based on the physical state of solute and
solvent. But in daily life three types solutions
1. Solids in solids
2. Solids in liquids
3. Gases in liquids

6. Examples of Solutions
1. Solids in solids – Alloys of metals
2. Solids in liquids – Salts in water
3. Gases in liquids – CO2 in water

7. METHODS OF EXPRESSING
CONCENTRATIONS OF SOLUTIONS
Mass fraction
Mole fraction
Mass percentage
Parts per million
Molarity
Normality

8. Mass Fraction
Mass of a particular component or solute
present in unit amount of a solution
Mole Fraction
Number of moles of a particular component or
solute present in unit amount of a solution

9. Mass Percentage
Mass of a particular component or solute present
in hundred parts by mass of a solution
Parts per Million
Mass of a particular component or solute present
in million parts by mass of a solution

10. THANK YOU