Podcast
Questions and Answers
What does the melting point of a crystalline solid indicate?
What does the melting point of a crystalline solid indicate?
- The density of the solid material
- The strength of interactions between molecules in a solid (correct)
- The external pressure applied to the solid
- The color of the solid material
How does the heat of fusion relate to the strength of intermolecular forces?
How does the heat of fusion relate to the strength of intermolecular forces?
- Strong forces result in high heat of fusion and high melting point (correct)
- Strong forces result in low heat of fusion and low melting point
- Weak forces result in high heat of fusion and high melting point
- Weak forces result in low heat of fusion and low melting point
How does the energy requirement for disrupting interactions within a solid relate to its melting point?
How does the energy requirement for disrupting interactions within a solid relate to its melting point?
- Higher melting point requires less energy
- Lower melting point requires less energy (correct)
- Higher melting point requires more energy
- Lower melting point requires more energy
Why do polymorphic forms have different melting points?
Why do polymorphic forms have different melting points?
What is the heat of fusion?
What is the heat of fusion?
How does a crystal bound by weak forces differ from one bound by strong forces?
How does a crystal bound by weak forces differ from one bound by strong forces?
What is the process in which a substance forms a solution called?
What is the process in which a substance forms a solution called?
What property is crucial for a drug to be absorbed at the site of absorption?
What property is crucial for a drug to be absorbed at the site of absorption?
What does the dissolution rate constant 'k' represent in the Noyes-Whitney equation?
What does the dissolution rate constant 'k' represent in the Noyes-Whitney equation?
Which equation defines the rate of solution of solids?
Which equation defines the rate of solution of solids?
What determines the surface area 'A' of the dissolving solid in the Noyes-Whitney equation?
What determines the surface area 'A' of the dissolving solid in the Noyes-Whitney equation?
What is crucial for dissolved drug molecules to pass throughout the dissolving fluid to be absorbed?
What is crucial for dissolved drug molecules to pass throughout the dissolving fluid to be absorbed?
What does a contact angle greater than 90° suggest?
What does a contact angle greater than 90° suggest?
How is wettability of powders measured?
How is wettability of powders measured?
In terms of wetting tendency, what does a smaller contact angle indicate?
In terms of wetting tendency, what does a smaller contact angle indicate?
What is solubility defined as?
What is solubility defined as?
What enhances solubility of a drug?
What enhances solubility of a drug?
Why are wetting agents (surfactants) included to improve wettability?
Why are wetting agents (surfactants) included to improve wettability?
