Question

Predict the sign of entropy and enthalpy change in the following:

a) Cl2(g) → 2Cl(g)

b) H2O(g) → H2O(l)​

Answer 1

Answer:

a)+ve because Cl2 molecules change into atoms

b) -ve because H2O molecules of gas change into liquid due to which molecules randomness decreases i.e molecules come together.