Question

For the process, H₂O (I) → H₂O (g) at 100°C, ΔS is
(a) positive
(b) negative
(c) zero
(d) unpredictable

Answer 1

the option d is correct

Answer 2

(d) Unpredictable.

With O2 on the left side the right side will need to have an even multiple of H2O to balance the oxygen.

There will be 4 times some multiple of hydrogen on the right side.

The simplest way to to have 4 times a multiple of hydrogen from the let side using H2 is with 2H2