Pharmaceutical Analytical Chemistry 1 Quiz

Course Information

• Course title: Pharmaceutical Analytical Chemistry 1 (PC101)
• Level: 1
• Department: Pharmaceutical Analytical Chemistry
• Faculty: Pharmacy, Mansoura University
• Instructors: Prof. Dr. Jenny Jeehan Nasr, Dr. Galal Magdy, Dr. Heba Samir Elama

Learning Outcomes

• Students will learn about:
  • Chemistry
  • Solution Terminology
  • Solubility
  • Mole Concept
  • Concentration units
  • Stoichiometry of reaction

Analytical Chemistry

• Qualitative Analysis: Identifying analytes (e.g., by color, taste, physical properties, solubility)
• Quantitative Analysis: Determining the concentration or amount of a substance (e.g., through determination, estimation, or assay)

Solution Terminology

• Solvent: A substance that dissolves other materials to form a solution
• Solute: A substance that dissolves in a solvent
• Solution: A homogenous mixture of one or more solutes dissolved in a solvent

Concentration

• Concentrated solution: A solution with a relatively large proportion of solute to solvent
• Diluted solution: A solution with a relatively smaller proportion of solute to solvent

Solution Saturation

• Unsaturated solution: A solution that can dissolve a further amount of solute at a specific temperature
• Saturated solution: A solution which cannot dissolve a further amount of solute at a specific temperature
• Supersaturated solution: A solution with more solute than required to saturate it at a given temperature; this solution is unstable

Electrolytes and Nonelectrolytes

• Nonelectrolytes: Molecular substances that do not dissociate in water; their solutions do not conduct electricity (e.g., sugar, ethyl alcohol)
• Electrolytes: Substances that dissociate in water; their solutions conduct electricity
  • Strong electrolytes: Substances that completely dissociate in water (e.g., NaCl, strong acids, strong bases)
  • Weak electrolytes: Substances that dissociate to a small extent in water (e.g., acetic acid, water, NH4OH, HCN)

Mole Concept

• Atoms and molecules are extremely small in size and mass
• Moles are standard scientific units for measuring very small entities (atoms, molecules)
• 1 mole = 6.022 x 10²³ atoms/molecules/particles
  • This is Avogadro's number
• Formula Weight (or Molecular Weight): The sum of the atomic weights of all atoms in a compound

Concentration Units

• Molarity (M): The number of moles of solute per liter of solution
  • Molarity = Moles of solute / Liters of solution
• Normality (N): The number of equivalent weights of solute per liter of solution

Stoichiometry of Reaction in Solution

• Stoichiometry deals with the quantitative relationships between reactants and products in a chemical reaction.
• Mole ratios, obtained from balanced chemical equations, are used to solve stoichiometric problems involving solutions.

Homework Examples

• Various example problems showing calculations of
  • Weight of a substance in moles
  • Moles of a substance in grams
  • Moles to molecules
  • Moles to atoms and other conversion problems. Calculations are based around specific chemical formulas.

Test your knowledge on Pharmaceutical Analytical Chemistry 1, covering essential concepts such as solution terminology, solubility, mole concept, and stoichiometry. This quiz will help reinforce your understanding of qualitative and quantitative analysis. Get ready to assess your comprehension of key chemistry principles.