Question

Which of the following processes have a ΔS > 0?

A) Na₂CO₃(s) + H₂O(g) + CO₂(g) → 2 NaHCO₃(s)

B)CH₄(g) + H₂O(g) → CO(g) + 3 H₂(g)

C)CH₃OH(l) → CH₃OH(s)

D)N₂(g) + 3 H₂(g) → 2 NH₃(g)

E)All of the above processes have a DS > 0.

Answer 1

Entropy : It can defined as the measure of the molecule disorder, or randomness, of a system. Simply as the no. of moles increases in the produuf side for gaseous molecule has it has maxinuem entropy compared to the liquid or solid shale) the entropy increases, or the value of as is greater than o ie; AS YO I

The four gives reactions are o A Na, CO₂ (s) + hoigs + cocos - Natios As only a moles of product is formed from 3 moles or reactant and also it (the prody s in solid state, so as to B) ha g) + tho cg) C0 (g) + 3H2 cg) As & moles of gaseas products are ophained from the reaction or 2 sudes of gaseous reachank, the entropy increases. I so, ASO 9 CH OH (8) CH₂ OH (S) As I mole solid product is formed from I mole liquid , the entropy decreases as solid has less eurtropy than liquid. 8. AS LO d) No (g) + 31, (g) 2NH₂ (g) Both sides are in gaseous state but the no. or more of reachant is 4 and product formed as 2, so entropy decreases. So, DS TO E All the processes do not have asto. , Qullu 0% ч али и сре , В2