wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Acetic acid CH3COOH can form a dimer (CH3COOH)2 in the gas phase. The dimer is held together by two H-bonds with a total strength of 66.5kJ per mol of the dimer.
If at 25oC, the equilibrium constant for the dimerization is 1.3×103. Calculate ΔSo for the reaction:
2CH3COOH(g)(CH3COOH)2(g)

645133_617a50ada54144c3b8f84e5910e20506.png

Open in App
Solution

ΔGo=2.303RTlogK

=2.303×8.314×298log(1.3×103)=17767.688J=17.767 kJ

ΔGo=ΔHoTΔSo

17.767=66.5298×ΔSo

ΔSo=66.5+17.767298=0.163 kJ

Thus, ΔSo=0.163 KJ

flag
Suggest Corrections
thumbs-up
0
similar_icon
Similar questions
View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Spontaneity and Entropy
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon