A sample of propane gas C3 H8 was collected over water at 222.5°C and a 670 tour the volume of the wet gas is 3.58 l what will the volume of the dry propane at standard pressure

Answer 1

To find the volume of the dry propane at standard pressure, we first need to find the volume of the wet propane at standard pressure and temperature using the ideal gas law:

PV = nRT

Where:
P = pressure
V = volume
n = number of moles
R = gas constant (0.0821 L.atm/mol.K)
T = temperature

Standard pressure is 1 atm and standard temperature is 273 K.

First, let's find the number of moles of propane in the wet gas sample:

n = PV/RT
n = (670 torr * 3.58 L) / (0.0821 L.atm/mol.K * 495.65 K)
n = 0.175 moles

Now, we can use the number of moles to find the volume of dry propane at standard pressure:

V1 / n1 = V2 / n2

V1 = volume of wet propane
n1 = moles of wet propane
V2 = volume of dry propane at standard pressure
n2 = moles of dry propane at standard pressure

V2 = V1 * n2 / n1
V2 = 3.58 L * 1 / 0.175
V2 = 20.46 L

Therefore, the volume of the dry propane at standard pressure is 20.46 liters.