Question 19N.2.HL.TZ0.b(ii)

ALTERNATIVE 1

«from b(i)» $∆Q$ is negative ✔

$∆S=\frac{∆Q}{T}$ AND $∆S$ is negative ✔

ALTERNATIVE 2

T and/or V decreases ✔

less disorder/more order «so S decreases» ✔

ALTERNATIVE 3

T decreases ✔

$∆S=K\times \ln \left(\frac{T2}{T1}\right)<0$ ✔

NOTE: Answer given, look for a valid reason that S decreases.