Question

Select the wrong statements from the following statements with respect to a phase diagram.

(a) Gives information about concentration

(b) Gives information about solubility

(c) Gives information on melting and boiling points

(d) Gives information on relative concentration

I got this question in a national level competition.

My question is taken from Gibb’s Phase Rule in chapter Phase Rule of Engineering Chemistry I

Answer 1

Correct answer is (d) Gives information on relative concentration

Best explanation: A phase diagram gives information only on the concentration of species, their solubility rate, degree of freedom and other physical properties. It does not explain about transformation rates and relative concentration (relative concentration=total concentration/equilibrium concentration).