Question

At STP the volume of 1 mole of an ideal gas is always equal _____ to L (given to three significant figures.). This quantity is called the standard _____ volume.

a) 22.4, molar
b) 24.2, specific
c) 25.0, molar
d) 26.2, specific

Answer 1

At STP, 1 mole of an ideal gas has a volume of 22.4 L, which is known as the standard molar volume. The correct answer is a) 22.4, molar. This molar volume is a helpful conversion factor for stoichiometry problems when conditions are at STP.

Step-by-step explanation:

At standard temperature and pressure (STP), the volume of 1 mole of an ideal gas is always equal to 22.4 L. This quantity is called the standard molar volume. So, the correct answer is a) 22.4, molar.

The condition of STP is defined as a temperature of 0°C (273.15 K) and a pressure of 1 atmosphere (atm). Applying the ideal gas law under these conditions reveals that any ideal gas will have a molar volume of 22.4 liters per mole. This molar volume is a convenient conversion factor when solving stoichiometry problems at STP. Remember, the molar volume of 22.4 L/mol is only accurate at STP and should not be used if the conditions differ.