2. A chemist finds two
unlabeled bottles of clear
liquids in the chemical
storage cabinet. Nearby, she
finds two labels specifying
the isomers 1-Propanol and
2-Propanol and giving their
accepted densities (see right).
The chemist has a flask of
volume 25 mL ± 1 mL and a
balance capable of reading to
± 0.1 g.
a. What are isomers?
H
1
H - C
of
I
H
H
I
- C - C
H
H1C
1-Propanol
C3H8O
H
1
H
O - H
F.M. 60.11 %/mol
D = 0.804 %/mL
H
H
I
b. If the chemist fills
the flask completely with
each isomer (being careful
not to contaminate the
samples), what is the
range
possible masses consistent
with the uncertainty in the
volume of the flask?
c. Is it possible to identify which label belongs to which bottle given only the equipment listed above? Explain?
H
Н
HICIE
CCC - H
|
|
H H
I
Н
2-Propanol
C3H8O
F.M. 60.11 %/mol
D = 0.785 %/mL
↑