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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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
Transcribed Image Text:Q1: Find the molar conductivity (in S.cm².mol) of a 0.00100 M solution of KCI if its
conductivity is 1.40×10-3 S.cm-¹ at 298 K.
a) 0.0140
b) 140.
a) 0.0207
c) 1.40
Q2: The molar conductivity of a 0.0213 M solution of a weak base (BOH) is 83.4 S.cm².mol-¹.
What is the value of the degree of dissociation if the sum of the ionic conductivities at infinite
dilution for B and OH is 237 S.cm².mol-¹?
b) 0.484
a) 0.404
c) 0.352
d) 1400.
c) 1.00
d) 1.36x10-5
Q3: If the transport number (t+) for an electrolyte is 0.55. The ratio of the ionic mobility of the
cation to the anion will be:
b) 1.78
c) 0.934
e) 14.0
d) 1.22
physical
chemistry
e) 2.07x10-5
Q4: Find the mean activity coefficient (y+) for Na2SO4. The activity coefficients for Na* and
SO4 are 0.913 and 0.695, respectively.
a) 0.634
b) 0.534
d) 0.734
e) 0.941
e) 0.834
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