CHEM 162A AUTUMN (2019 – 2022) PRACTICE EXAM SOLUTION VERSION B EXAM #2 UNIVERSITY OF WASHINGTON

CHEM 162A AUTUMN (2019 – 2022) PRACTICE EXAM SOLUTION VERSION B EXAM #2
UNIVERSITY OF WASHINGTON

, 1. A hydrocarbon with the molecular formula C10H20 falls into which functional group?
A. Alkane
B. Alkene
C. Alkyne
D. Aromatic
E. Aromatic or alkyne




2. Compare amphoteric ion hydrogen sulfate (HSO 4-) and amphoteric oxide beryllium oxide (BeO).
Reacts with HCl Reacts with NaOH Dissolves in water
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A. HSO4 and BeO HSO4 and BeO neither
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B. BeO HSO 4 HSO4
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C. HSO4 BeO HSO4 and BeO
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D. HSO4 and BeO HSO4 and BeO BeO
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E. HSO4 and BeO HSO4 and BeO HSO4-
explanation does not include higher energy from color



3. Benzene (C6H6) can be used as a solvent for organic reactions. What is the freezing point of a solution that is
0.25 m toluene (C7H8) in benzene.
A. -1.3oC
B. -0.47oC
C. +0.47oC
D. +4.2oC
E. +6.8oC