What is the molar volume of the gas ammonia (NH³) at STP?
Isn't 1 mole of ANY ideal gas 22.4L @ STP? Or do you want to know the actual molar volume? That should be available on the web.
To find the molar volume of ammonia (NH₃) at standard temperature and pressure (STP), you need to know the molar mass of ammonia and the molar gas constant.
Step 1: Find the molar mass of ammonia (NH₃).
To calculate the molar mass, add up the atomic masses of all the atoms in the molecule.
- Atomic mass of nitrogen (N) = 14.01 grams/mole
- Atomic mass of hydrogen (H) = 1.01 grams/mole
Molar mass of NH₃ = 1(14.01) + 3(1.01) = 17.03 grams/mole
Step 2: Note down the value of the molar gas constant.
The molar gas constant (R) is a physical constant that relates the energy scale used for molecular gas processes to the temperature scale used for thermal cases. Its value is approximately 0.0821 liter·atm/(mol·K).
Step 3: Use the formula to calculate the molar volume.
The molar volume (V) is the volume occupied by one mole of any gas at a specific temperature and pressure.
The formula to calculate molar volume is:
V = (R * T) / P
Where:
V is the molar volume in liters/mole,
R is the molar gas constant (0.0821 liter·atm/(mol·K)),
T is the temperature in Kelvin,
P is the pressure in atmospheres.
At STP conditions, T = 273.15 K and P = 1 atm.
Plug in the values into the formula:
V = (0.0821 * 273.15) / 1
Calculating this expression gives us:
V ≈ 22.4 liters/mole
Therefore, at STP, the molar volume of ammonia (NH₃) is approximately 22.4 liters/mole.