Which of the following reactions have a positive ΔSrxn? Check all that apply.
Answer:
In the reactions
A(g) + B(g)------- 3C(g)
2A(g) + B(s)-------3C(g)
the number of moles increases, volume increases,so disorder of the molecules increases in the product side for third and fourth reactions so ΔSrxn is positive.