Gases Under Pressure Quick Check

Question

5 of 55 of 5 Items
Question
What must be true in order to use the conversion factor 22.7 L/mol when performing a stoichiometric calculation involving gases?(1 point)
Responses

All of the gases involved must be the same type of element or compound.
All of the gases involved must be the same type of element or compound.

The gases must all be composed of pure elements and not compounds.
The gases must all be composed of pure elements and not compounds.

The coefficients of the gases in the chemical equation must all be the same.
The coefficients of the gases in the chemical equation must all be the same.

The container holding the gases must be at standard temperature and pressure.

Answer 1

The correct response is:

The container holding the gases must be at standard temperature and pressure.

This is because the conversion factor of 22.7 L/mol applies specifically under standard temperature and pressure (STP) conditions, which are defined as 0 degrees Celsius (273.15 K) and 1 atmosphere of pressure. Thus, for stoichiometric calculations involving gases using this conversion factor, the gases must be at STP.