=========================preview======================
(CHEM100)final_sample2_chem100_by_PPSpider.pdf
Back to CHEM100 Login to download
======================================================
Sample Paper for Chem 100 (Final Exam)
Part I. Multiple Choices (2 points each; 50 points in total)
1. Which one of the following compounds has the greatest melting point?
(a) Cl2 (b) Br2 (c) ICl (d) IBr
2. Arrange the following in order of increasing boiling point: RbF, CO2, CH3OH, CH3Br
(a)
RbF < CO2 < CH3OH < CH3Br

(b)
CO2 < CH3OH < CH3Br < RbF

(c)
CO2 < CH3Br < CH3OH < RbF

(d)
CH3OH < CH3Br < RbF < CO2


3. Place the following liquids at C50 0C in order of increasing vapor pressure: dimethyl ether, ethanol, and propane.
(a)
dimethyl ether < ethanol < propane

(b)
propane < dimethyl ether < ethanol

(c)
ethanol < propane < dimethyl ether

(d)
ethanol < dimethyl ether < propane


4. In salts of formula MX, the coordination numbers of M and X.
(a)
must be equal (b) can be different and can be the same

(c)
are always different (d) none of the above


5. For the hcp and fcc close-packing arrangements, the coordination numbers are, respectively,
(a)6and 8 (b)8 and 10 (c)10and 12 (d)12and 12
6. The number of tetrahedral holes in an fcc unit cell is.
(a)12 (b)4 (c)6 (d)8
7. For an fcc close packing arrangement, one can choose type(s) of unit cells.
(a) only one (b) only two (c) many (d) only four
8. Which of the following reactions belong to the acid-base reactions?
(a)
H+OH . H2O.

(b)
PF3+F2 . PF5.

(c)
SiF4 + 2NaF . Na2[SiF6].

(d)
Mo +6CO . Mo(CO)6.


9. Select the weakest Bronsted acid.
(a) H3PO4 (b) H2CO3 (c) H3BO3 (d) H2SeO4
10. Which of the following pairs is the stronger acid?
3+ 2+
H2S2O3 vs. H2SO4 [Co(H2O)6]vs. [Co(H2O)6]
11. Which of the following compounds can act as both hard and soft bases?
(a) dimethylsulfoxide (b) [S2O3]2-(c) [NO3]-(d) [CO3]2-12. Which of the following statements is correct?
(a)
A Lewis base is an electron-pair acceptor and acts as a nucleophile.

(b)
A Lewis base is an electron-pair acceptor and acts as an electrophile.

(c)
A Lewis base is an electron-pair donor and acts as an electrophile.

(d)
A Lewis base is an electron-pair donor and acts as a nucleophile.

(e)
A Lewis base is the same as a Br.nsted-Lowry acid.


13.
Which of the following statements is not true? a) CH3CH2C(O)NH2 has a higher boiling point than CH3CH2C(O)NHCH3. b) CH3CH2CH(NH2)CH2COOH is more soluble in water than CH3CH2CH(NH2)CH2C(O)OCH3. c) CH3CH2COOH has a higher boiling point than CH3CH2C(O)NH2. d) HO2CCH2CH2CO2H has a higher boiling point than CH2CH2CH2OH.

14.
Shown in the right diagram is the structure of morphine. Which of the following collections of functional groups are present?

(a)
primary-alcohol, secondary-amine, ether and ketone

(b)
tertiary-alcohol, secondary-amine, ether and phenol

(c)
secondary-alcohol, tertiary-amine, ether and phenol

(d)
secondary-alcohol, primary amine, phenol and aldehyde

(e)
secondary-alcohol, tertiary-amine, phenol and amide