1. What is Molar Volume at STP?

Molar volume is the volume occupied by one mole of a substance at standard temperature and pressure (STP). At STP (0°C and 1 atm pressure), one mole of any ideal gas occupies 22.4 liters.

2. How Does the Calculator Work?

The calculator uses the molar volume formula:

Where:

• \( Moles \) — Amount of substance in moles
• \( 22.4 \) — Molar volume constant at STP (L/mol)

Explanation: This formula calculates the volume that a given number of moles of gas would occupy at standard temperature and pressure conditions.

3. Importance of Molar Volume Calculation

Details: Calculating molar volume is essential in stoichiometry, gas law calculations, and determining quantities in chemical reactions involving gases.

4. Using the Calculator

Tips: Enter the number of moles of gas. The value must be greater than 0. The calculator will compute the volume at STP conditions.

5. Frequently Asked Questions (FAQ)

Q1: What does STP stand for?
A: STP stands for Standard Temperature and Pressure, which is defined as 0°C (273.15 K) and 1 atmosphere (101.325 kPa) of pressure.

Q2: Why is the molar volume 22.4 L/mol at STP?
A: This value comes from the ideal gas law and is derived from experimental measurements of gas behavior under standard conditions.

Q3: Does this apply to all gases?
A: The 22.4 L/mol value applies to ideal gases. Real gases may show slight deviations, but most gases approximate this value closely at STP.

Q4: How does temperature affect molar volume?
A: Molar volume increases with temperature according to Charles' Law (V ∝ T). At higher temperatures, the molar volume will be greater than 22.4 L/mol.

Q5: Can I use this for liquids or solids?
A: No, this calculation is specific to gases. Liquids and solids have much smaller molar volumes that vary significantly between substances.