Question

Which reaction has a positive δs°? question 6 options:
a. o2(g) + 2h2(g) → 2h2o(l)
b. 2n2h4(g) → 2nh3(g) + h2(g)
c. 2no(g) → n2o2(g)
d. n2(g) + 3h2(g) → 2nh3(g)?

Answer 1

b. Because there are 3 molecules in right and 2 molecules in the left, so entropy rises.