CM 131 PHYSICAL CHEMISTRY EXAM 1
SOLUTIONS FOR THERMODYNAMICS
CONCEPTS LATEST 2025-2026 SOLUTIONS
WITH ACCURATE ANSWERS UNIVERSITY OF
SINGAPORE
, CM1131
INSTRUCTIONS TO STUDENTS
1. Please write your Student Number only. Do not write your name.
2. This assessment paper contains FOUR questions and comprises TEN printed pages.
3. Students are required to answer ALL questions.
4. Students should write the answers for each question on a new page.
5. This is a CLOSED BOOK assessment.
6. Dictionaries of any description are NOT permitted.
7. Non-programmable calculators are permitted.
1
, Useful Formula
𝛿𝑞rev 𝜕𝑈m
∆r𝐺° = −𝑅𝑇ln𝐾 𝐶𝑉,m = ( )
𝑇 𝜕𝑇 𝑉
𝑑ln𝐾 ∆r𝐻°
𝐻 = 𝑈 + 𝑝𝑉 𝐺 = 𝐻 − 𝑇𝑆
𝑑𝑇 𝑅𝑇2
𝑝2 ∆vap𝐻m 1 1
𝑝1 𝑅 𝑇2 𝑇1
𝑘2[S]0[E]0 𝑘−1 + 𝑘2
Michaelis-Menten rate law: rate = where 𝐾M =
𝑘1
Gas constant: R = 8.314 J K−1 mol−1
Molar Masses of Some Substances
Water 18.02 g mol−1
Ethanol 46.07 g mol−1
2
SOLUTIONS FOR THERMODYNAMICS
CONCEPTS LATEST 2025-2026 SOLUTIONS
WITH ACCURATE ANSWERS UNIVERSITY OF
SINGAPORE
, CM1131
INSTRUCTIONS TO STUDENTS
1. Please write your Student Number only. Do not write your name.
2. This assessment paper contains FOUR questions and comprises TEN printed pages.
3. Students are required to answer ALL questions.
4. Students should write the answers for each question on a new page.
5. This is a CLOSED BOOK assessment.
6. Dictionaries of any description are NOT permitted.
7. Non-programmable calculators are permitted.
1
, Useful Formula
𝛿𝑞rev 𝜕𝑈m
∆r𝐺° = −𝑅𝑇ln𝐾 𝐶𝑉,m = ( )
𝑇 𝜕𝑇 𝑉
𝑑ln𝐾 ∆r𝐻°
𝐻 = 𝑈 + 𝑝𝑉 𝐺 = 𝐻 − 𝑇𝑆
𝑑𝑇 𝑅𝑇2
𝑝2 ∆vap𝐻m 1 1
𝑝1 𝑅 𝑇2 𝑇1
𝑘2[S]0[E]0 𝑘−1 + 𝑘2
Michaelis-Menten rate law: rate = where 𝐾M =
𝑘1
Gas constant: R = 8.314 J K−1 mol−1
Molar Masses of Some Substances
Water 18.02 g mol−1
Ethanol 46.07 g mol−1
2
