Question

If the following conditions result in the formation of a regular solution?

(a) Ω = 0

(b) Ω > 0

(c) Ω < 0

(d) Ω = 10

The question was posed to me by my college director while I was bunking the class.

My question is taken from Application of Phase Rule to One Component System topic in chapter Phase Rule of Engineering Chemistry I

Answer 1

Correct choice is (c) Ω < 0

The explanation: We know that as the resistance increases, conductance decreases. This happens at higher temperature and pressure. Thus a regular solution will be formed only when conductivity of the solution is high. Thus the required condition is Ω < 0.