Question

What is the selectivity of C4H7Cl relative to C4H8Cl2?

(a) 0.25

(b) 0.50

(c) 0.75

(d) 1.00

The question was asked during an interview.

This intriguing question comes from Terminology for a Reaction System-V in portion Material Balances without Reaction and Material Balances Involving Reactions of Chemical Process Calculation

Answer 1

The correct option is (a) 0.25

For explanation I would say: Selectivity = 10 (gm moles of C4H7Cl)/40 (gm moles of C4H8Cl2).