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Questions and Answers
Which equation is also known as the buffer equation?
Which equation is also known as the buffer equation?
The dissolution of a drug is calculated using which equation?
The dissolution of a drug is calculated using which equation?
To increase the miscibility of partially miscible liquids, what kind of substance should be added?
To increase the miscibility of partially miscible liquids, what kind of substance should be added?
What happens to the vapor pressure of a solution in the presence of a solute?
What happens to the vapor pressure of a solution in the presence of a solute?
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What is the number of gram equivalents of solute per liter of solution called?
What is the number of gram equivalents of solute per liter of solution called?
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In which crystalline form does NaCl exist?
In which crystalline form does NaCl exist?
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Which diffusion mechanism involves the transport of drugs from a region of high to low concentration?
Which diffusion mechanism involves the transport of drugs from a region of high to low concentration?
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Which statement about dustibility is NOT true?
Which statement about dustibility is NOT true?
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Which equation reveals the rate of diffusion of a drug?
Which equation reveals the rate of diffusion of a drug?
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What is the contact angle between a liquid droplet and the surface when complete wetting occurs?
What is the contact angle between a liquid droplet and the surface when complete wetting occurs?
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What do gels and magmas form when standing, and what do they become on shaking?
What do gels and magmas form when standing, and what do they become on shaking?
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What type of forces exist between polar molecules with dipole movement?
What type of forces exist between polar molecules with dipole movement?
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What is the term for the existence of elemental substances in more than one crystalline form?
What is the term for the existence of elemental substances in more than one crystalline form?
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Which method is used to measure tonicity based on the effect on red blood cells suspended in solutions?
Which method is used to measure tonicity based on the effect on red blood cells suspended in solutions?
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Which law expresses the effect of pressure on the solubility of a gas?
Which law expresses the effect of pressure on the solubility of a gas?
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What type of interaction involves the attractive interaction between a polar molecule and the induces dipole?
What type of interaction involves the attractive interaction between a polar molecule and the induces dipole?
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Study Notes
Pharmaceutical Calculations
- The Henderson-Hasselbalch equation is also known as the buffer equation.
- The Noyes-Whitney equation is used to calculate the dissolution of a drug.
Solubility and Miscibility
- To increase the miscibility of partially miscible liquids, a solubilizer or a co-solvent should be added.
- The vapor pressure of a solution decreases in the presence of a solute.
Solutions and Concentration
- The number of gram equivalents of solute per liter of solution is called normality.
- NaCl exists in a face-centered cubic crystalline form.
Diffusion and Transport
- Passive diffusion involves the transport of drugs from a region of high to low concentration.
- Fick's law of diffusion reveals the rate of diffusion of a drug.
Physical Properties
- A contact angle of 0° is observed when complete wetting occurs between a liquid droplet and the surface.
- Gels and magmas form a sediment when standing, and become a uniform mixture on shaking.
Intermolecular Forces
- Polar molecules with dipole movement exhibit dipole-dipole forces.
- Polymorphism is the term for the existence of elemental substances in more than one crystalline form.
Osmometry and Solubility
- The haemolysis method is used to measure tonicity based on the effect on red blood cells suspended in solutions.
- Henry's law expresses the effect of pressure on the solubility of a gas.
- Induced dipole forces involve the attractive interaction between a polar molecule and the induced dipole.
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Description
Test your knowledge of physical pharmacy with these practice questions. Topics include buffer equation, dissolution of drugs, and more.
