Chapter 2 Example

Using the Ideal Gas Law to Calculate C_A0 and F_A0

The entering molar flow rate for a gas is

where CA0=	entering concentration, mol/dm3
yA0=	entering mole fraction of A
P0=	entering total pressure, e.g., kPa
PA0=	yA0P0 = entering partial pressure of A, e.g., kPa
T0=	entering temperature, K
v0=	volumetric flow rate
R=

The size of the reactor will depend on the flow rate, reaction kinetics, reactor conditions, and desired conversion. Let's first calculate the entering molar flow rate.

A gas of pure A at 830 kPa (8.2 atm) enters a reactor with a volumetric flow rate, v₀, of 2 dm³/s at 500 K. Calculate the entering concentration of A, C_A0, and the entering molar flow rate, F_A0.
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