एन्थैल्पी परिवर्तन कैलकुलेटर — सूत्र
## Van der Waals Equation
### Formula
**[P + a(n/V)²] × [V - nb] = nRT**
Solving for P:
**P = nRT/(V - nb) − a(n/V)²**
Where:
- **a** = correction for intermolecular attraction (L²·atm/mol²)
- **b** = correction for molecular volume (L/mol)
- Other variables as in the ideal gas law
The a term reduces pressure (attraction pulls molecules inward). The b term reduces available volume.
### Formula
**[P + a(n/V)²] × [V - nb] = nRT**
Solving for P:
**P = nRT/(V - nb) − a(n/V)²**
Where:
- **a** = correction for intermolecular attraction (L²·atm/mol²)
- **b** = correction for molecular volume (L/mol)
- Other variables as in the ideal gas law
The a term reduces pressure (attraction pulls molecules inward). The b term reduces available volume.
हल किया गया उदाहरण
1 mol of N₂ (a = 1.36, b = 0.0318) at 300 K in 1 L.
- P = nRT/(V - nb) - a(n/V)²
- P = (1)(0.08206)(300)/(1 - 1×0.0318) - 1.36(1/1)²
- P = 24.618/0.9682 - 1.36
- P = 25.42 - 1.36
- P = 24.06 atm