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Mole to Volume Formula:
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The mole to volume formula (V = n × Vm) calculates the volume of a gas from the amount of substance (in moles) and the molar volume. This relationship is based on Avogadro's law, which states that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules.
The calculator uses the mole to volume formula:
Where:
Explanation: At standard temperature and pressure (STP: 0°C and 1 atm), the molar volume of any ideal gas is approximately 22.4 L/mol. Under other conditions, the molar volume can be calculated using the ideal gas law.
Details: Calculating gas volumes from moles is essential in chemical reactions, stoichiometry calculations, gas law applications, and industrial processes where gases are produced or consumed.
Tips: Enter the amount of substance in moles and the molar volume in L/mol. Both values must be positive numbers. For STP conditions, use 22.4 L/mol as the molar volume.
Q1: What is molar volume?
A: Molar volume is the volume occupied by one mole of a substance, typically a gas, at a given temperature and pressure.
Q2: Does this formula work for all gases?
A: This formula works well for ideal gases. Real gases may show deviations from ideal behavior, especially at high pressures and low temperatures.
Q3: How does temperature affect molar volume?
A: Molar volume increases with temperature (Charles' Law) and decreases with pressure (Boyle's Law). The relationship is described by the ideal gas law: Vm = RT/P.
Q4: Can I use this for liquids or solids?
A: While the formula V = n × Vm is mathematically correct, molar volumes of liquids and solids are much smaller and less commonly used in calculations compared to gases.
Q5: What are common molar volume values?
A: At STP (0°C, 1 atm): 22.4 L/mol; At RTP (room temperature and pressure: 25°C, 1 atm): approximately 24.5 L/mol.