Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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based on your data, is acetic acid more soluble in water or ethyl acetate? How about water versus toluene?

Transcribed Image Text:DATA SHEET: DISTRIBUTION COEFFICIENT
Name: 2horik Selena Camelo
Equiv. wt. of acetic acid
60 g/moL
10.10 mL
a.
Volume of base required for first titration
0.01010 L
or
b. Mass of acetic acid in the 10 mL aliquot 0.2 aot x0.0101XX 609
0.1212 8
0.2
Formula: massacid = (N X V)base X (Equiv. wt.)acid
Inoot
6.53 mL
с.
Volume of base required for second titration
O.00653 L
or
d. Mass of acid left over in water layer 0.2 xo.o06534x 609
I met
0.07836 8ACOH in H,O
Use the same formula as in (b)
IK
Mass of acid in ethyl acetate after a single 10 mL extraction
е.
.04284 g ACOH in ETOAC
Item (b) – item (d)
O. 1212g-0.07836 =0.04284
1 x 10 mL extraction
(starting g ACOH in 10 mL aliquot-g ACOH remaining in H,O = g
ACOH in EtOAC)
6,29 mL
f.
Volume of base required for third tritraion
0.00629 L
or
g. Mass of acid in water layer
0.20
X 0. 00629X x 60g
.07548 g ACOH in H,O
Use the same formula as in (b)
h. Mass of acid in ethyl acetate after two 5 mL extractions
04572 g ACOH in EtOAc
Item (b)- item (g)
O. 1212g-0.01548g =0.04572
2 x 5 mL extractions
i.
Distribution coefficient (K,) of acetic acid in ethyl acetate
0-04284g
0-078369
0.04572 g
0.018369
= 0.6057
=0.5467
Item (e) / item (d)
vs.
Item (h) / Item (g)
K, (single extraction) . 5467
K, (double extraction) 6051
5 | Page
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