Ideal Gas Law Calculator
Chemistry & BiologyCalculate the volume of an ideal gas using the ideal gas law, given pressure, moles, and temperature.
Volume
The volume of the gas, calculated using the ideal gas law (PV = nRT) with R = 0.0821 L atm per mol K.
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Odeh Ahwal0people find this calculator helpful
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Chemistry & Biology calculators
Frequently Asked Questions
What is the ideal gas law?
The ideal gas law (PV equals nRT) relates pressure, volume, moles, and temperature of a gas, assuming the gas behaves ideally — no intermolecular forces and negligible particle volume — which is a close approximation for many real gases at moderate conditions.
Why is temperature measured in Kelvin?
The ideal gas law requires an absolute temperature scale starting at true zero energy, which Celsius and Fahrenheit do not provide — Kelvin avoids negative temperature values that would break the proportional relationships in the formula.
When does a real gas deviate significantly from ideal behavior?
Real gases deviate most from ideal behavior at high pressure and low temperature, where intermolecular forces and particle volume become significant relative to the conditions assumed by the ideal gas law.
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