Question

What is osmotic pressure? Explain the difference between osmosis and diffusion with an example.

Hint:

Osmosis occurs in biological systems, while diffusion applies to all states of matter.

Answer 1

Step 1: Definition:
Osmotic pressure is the pressure required to stop the osmotic flow of solvent molecules across a semipermeable membrane. \[ \pi = CRT \] Step 2: Difference Between Osmosis and Diffusion:
\begin{center} \begin{tabular}{|c|c|} \hline Osmosis & Diffusion
\hline Movement of solvent & Movement of solute
\hline Requires a membrane & No membrane needed
\hline Example: Water absorption by roots & Example: Perfume spreading in air
\hline \end{tabular} \end{center}