Question

Q. Which of the following reactions will have a positive value of △S°?

I. Pb(s) + Cl2(g) --> PbCl2(s)

II. 2H2S(g) + 3O2(g) --> 2H2O(g) + 2SO2(g)

III. K2SO4(s) --> 2K+(aq) + SO42-(aq)

a. I only

b. II only

c. III only

d. I and II

e. II and III

Answer 1