CHM 231 Spring, 2025 Midterm Examination II | 30 Comprehensive Questions & Verified Answers | 100% Correct -The Ultimate Guide for Yr. (2026/2027)

NAME __________________________________________


CHM 231 Spring, 2025 Midterm Examination
II | 30 Comprehensive Questions & Verified
Answers | 100% Correct -The Ultimate Guide for
Yr. (2026/2027)

Dr. Guo

Time limit: 75 minutes Total points = 300

Answer on machine-grading sheets by marking response A, B, C, D or E. BE SURE TO
ENTER YOUR LAST AND FIRST NAMES, AND YOUR 10-DIGIT ASU ID NUMBER
ON THE FORM. SHOW YOUR ASU ID WHEN YOU TURN IN YOUR ANSWER SHEET. MARK YOUR
ANSWERS ON THIS SHEET AS WELL, AND KEEP IT FOR FUTURE REFERENCE.

THE QUESTIONS BELOW ARE EACH WORTH 10 POINTS

1 Which is the IUPAC name for the following alkane?




a) 2-ethyl-3-methylpentane
b) 3,4-dimethylhexane
c) 2,3-diethylbutane
d) 3-methyl-4-ethylpentaneAnswer: b


2. Which is the IUPAC name for the following cycloalkane?




1

, NAME __________________________________________

a) 2,4-dimethyl-1-ethylcyclopentane
b) 1,3-dimethyl-5-ethylcyclopentane
c) 1-ethyl-2,4-dimethylcyclopentane
d) 1-ethyl-3,5-dimethylcyclopentaneAnswer: c


3. Which is the IUPAC name for the following cycloalkane?




a) cis-1-ethyl-2-methylcyclohexane
b) trans-1-ethyl-2-methylcyclohexane
c) cis-1-methyl-2-ethylcyclohexane
d) trans-1-methyl-2-ethylcyclohexane Answer: b


4. Which is the structure for trans-1-ethyl-3-isopropylcyclohexane?




a) I
b) II
c) III
d) IV
Answer: a


5. How many primary carbons are there in the following alkane?




2