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Ideal Gas Law Molar Volume Formula:
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The molar volume of an ideal gas is the volume occupied by one mole of the gas at a given temperature and pressure. According to the ideal gas law, this volume is constant for all ideal gases under the same conditions of temperature and pressure.
The calculator uses the ideal gas law formula:
Where:
Explanation: The formula shows that molar volume increases with temperature and decreases with pressure, following the principles of the ideal gas law.
Details: Calculating molar volume is essential in chemical engineering, gas stoichiometry, and understanding gas behavior under different conditions. It helps in designing chemical reactors, storage systems, and predicting gas phase reactions.
Tips: Enter temperature in Kelvin and pressure in atmospheres. Ensure temperature is above absolute zero (0 K) and pressure is positive. For accurate results, use standard conditions when applicable.
Q1: What is the molar volume at STP?
A: At Standard Temperature and Pressure (0°C or 273.15 K and 1 atm), the molar volume of an ideal gas is approximately 22.414 L/mol.
Q2: Why do we use Kelvin for temperature?
A: Kelvin is an absolute temperature scale where 0 K represents absolute zero, making it essential for gas law calculations to ensure proportional relationships.
Q3: How does pressure affect molar volume?
A: According to Boyle's Law, molar volume is inversely proportional to pressure - as pressure increases, molar volume decreases, and vice versa.
Q4: Are real gases exactly ideal?
A: No, real gases deviate from ideal behavior, especially at high pressures and low temperatures. The ideal gas law provides a good approximation under normal conditions.
Q5: Can this calculator be used for gas mixtures?
A: Yes, for ideal gas mixtures, the molar volume calculation applies to the entire mixture as long as the gases behave ideally and don't interact chemically.