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Molar Volume Formula:
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Molar volume is the volume occupied by one mole of a substance (chemical element or chemical compound) at a given temperature and pressure. At standard temperature and pressure (STP), the molar volume of an ideal gas is 22.4 liters per mole.
The calculator uses the molar volume formula:
Where:
Explanation: The formula calculates the volume occupied by one mole of gas by dividing the total volume by the number of moles.
Details: Molar volume is essential in stoichiometric calculations, gas law applications, and determining the amount of gas produced or consumed in chemical reactions. It's particularly important in industrial processes and laboratory experiments involving gases.
Tips: Enter the volume of gas in liters and the number of moles. Both values must be positive numbers. The calculator will compute the molar volume in liters per mole.
Q1: What is STP and why is it important?
A: STP (Standard Temperature and Pressure) is defined as 0°C (273.15 K) and 1 atm pressure. At STP, one mole of any ideal gas occupies 22.4 liters.
Q2: Does molar volume change with temperature and pressure?
A: Yes, molar volume is dependent on temperature and pressure. It increases with increasing temperature and decreases with increasing pressure according to the ideal gas law.
Q3: Is 22.4 L/mol exact for all gases?
A: 22.4 L/mol is exact for ideal gases at STP. Real gases may deviate slightly from this value due to intermolecular forces and molecular size.
Q4: How do I convert between different units?
A: Common conversions include: 1 L = 1000 mL, 1 m³ = 1000 L. Ensure all units are consistent before calculation.
Q5: What if my gas is not at STP?
A: Use the ideal gas law (PV = nRT) to calculate the molar volume at different conditions, where R = 0.0821 L·atm/(mol·K).