Osmotic Pressure Calculator
To find osmotic pressure, multiply the number of particles per molecule by molar concentration, gas constant, and temperature.
This calculator helps you find the osmotic pressure of a solution. Osmotic pressure is the force that pulls water through a membrane when two solutions have different concentrations. It plays an important role in biology, chemistry, and water purification.
This tool is useful for students, chemists, and biologists working with solutions, reverse osmosis, and colligative properties. Instead of solving long equations, just enter the values, and the calculator will give the answer instantly.
Formula:
The formula for osmotic pressure is:
| Symbol | Meaning |
|---|---|
| O | Osmotic Pressure (atm or kPa) |
| n | Number of Particles (Van’t Hoff Factor) |
| ce | Osmotic Coefficient (depends on the solute) |
| C | Molar Concentration (mol/L) |
| R | Gas Constant (0.0821 L·atm/mol·K) |
| T | Temperature (Kelvin) |
What is Osmotic Pressure?
Osmotic pressure is the pressure needed to stop osmosis, the movement of water across a membrane. It depends on solute concentration and temperature.
For example, plants absorb water through osmosis, and kidneys filter waste using osmotic pressure. It is also used in reverse osmosis systems to purify water.
Understanding osmotic pressure is important in medicine, chemistry, and environmental science.
Final Words:
Simply put, osmotic pressure pulls water across membranes. This calculator makes it quick and easy to find osmotic pressure in chemistry, biology, and real-world applications.
FAQs:
1. How do you calculate osmotic pressure?
Use the formula: O = n × ce × C × R × T, where n is the Van’t Hoff factor and C is the molar concentration.
2. What is the osmotic pressure of 0.2M glucose solution at 300K?
Plug values into the formula: O = 1 × 1 × 0.2 × 0.0821 × 300, which gives 4.92 atm.
3. What is the Van’t Hoff equation for osmotic pressure?
The Van’t Hoff equation is O = iCRT, where i is the Van’t Hoff factor.