Question

If V represents volume and Q represents volumetric flow rate, then which of the following is a valid expression for space velocity?

(a) \(\frac{V}{Q} \)

(b) \(\frac{Q}{V} \)

(c) Q × V

(d) \(\frac{V}{C_{A0}} \)

The question was asked in an online quiz.

My enquiry is from Space Time and Space Velocity topic in section Ideal Reactors for a Single Reaction, Conversion and Reactor Sizing of Chemical Reaction Engineering

Answer 1

The correct option is (b) \(\frac{Q}{V} \)

To elaborate: Space velocity is the ratio of volumetric flow rate to volume. It has the unit hr^-1.