Question

The size of aqueous filled pores is_____°A

• A. 1-3
• B. 11-18
• C. 19-25
• D. 4-10

Answer 1

The Correct Option is D

The question pertains to the size of aqueous-filled pores, which is a concept related to pharmaceutics, specifically the study of diffusion and filtration processes. Pores in pharmaceutical contexts often refer to the passageways within materials or membranes through which water or other solutions can traverse. Understanding the size of these pores is crucial as it affects how molecules pass through and how filtration processes occur.

In this question, the options given for the size of aqueous-filled pores are in Angstrom units (°A). Below is the logic explaining why the correct answer is 4-10 Å:

1. \textbf{Concept of Pore Size:} Pore size is critically important in determining what particles or molecules can pass through. In pharmaceutical and biological contexts, pore sizes in the range of a few angstroms (Å) to several nanometers (nm) are common for membranes or gels that are meant to filter or separate molecules based on size.
2. \textbf{Comparison of Options:} Let's analyze each option in the context of typical pore sizes:
   • 1-3 Å: This size range is more typical of very small passages and would not effectively allow much diffusion of aqueous solutions, especially for larger molecules.
   • 11-18 Å: This size could be applicable to some larger pores but might be too large for classic aqueous pores in many biological filters or membranes.
   • 19-25 Å: This size is even larger, which doesn't fit well with typical aqueous pore sizes meant for selective filtration at a molecular level.
   • 4-10 Å: This is the most reasonable range for aqueous-filled pores, as it allows for selective diffusion of water and small solutes while potentially blocking larger solutes.
3. \textbf{Conclusion:} Based on standard practices in pharmaceutical sciences, aqueous-filled pores commonly range between 4-10 Å, which aligns with the nature and purpose of these pores in selective filtration and diffusion. Therefore, the correct answer is 4-10 Å.

By understanding the sizes and applications of pores, especially within pharmaceutics, we can conclude that the most suitable option provided is indeed 4-10 Å.