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:Electroly
Concentr X
Chapter
Partial P
henrys la x
My Q
'index.html
Sodium hydroxide is a white, crystalline basic salt that readily dissociates in water to produce a strong
base
NaOH(s) –
- Na* (aq) + OH (aq)
According to the CRC Handbook of Chemistry and Physics, sodium hydroxide (NaOH; m.m. = 39.997
g mol-1; d = 2.13 g cm 3) has an aqueous solubility of 100.0g/100g at 20 °C. Below is a table of
aqueous sodium hydroxide densities (in kg L-1) at varying concentrations (wt%) and temperatures
(from handymath).
Conc. (wt%)
0 °C
10 °C
20 °C
40 °C
60 °C
80 °C
100 °C
1.0124
1.0107
• 1.0095
1.0033
0.9941
0.9824
0.9693
2
1.0244
1.0220
1.0207
1.0139
1.0045
0.9929
0.9797
4.
1.0482
1.0444
1.0428
1.0352
1.0254
1.0139
1.0009
8
1.0943
1.0889
1.0869
1.0780
1.0676
1.0560
1.0432
12
1.1399
1.1333
1.1309
1.1210
1.1101
1.0983
1.0855
16
1.1849
1.1776
1.1751
1.1645
1.1531
1.1408
1.1277
20
1.2296
1.2218
1.2191
1.2079
1.1960
1.1833
1.1700
24
1.2741
1.2658
1.2629
1.2512
1.2388
1.2259
1.2124
28
1.3182
1.3094
1.3064
1.2942
1.2814
1.2682
1.2546
32
1.3614
1.3520
1.3490
1.3362
1.3232
1.3097
1.2960
36
1.4030
1.3933
1.3900
1.3768
1.3634
1.3498
1.3360
40
1.4435
1.4334
1.4300
1.4164
1.4027
1.3889
1.3750
44
1.4825
1.4720
1.4685
1.4545
1.4405
1.4266
1.4127
48
1.5210
1.5102
1.5065
1.4922
1.4781
1.4641
1.4503
50
1.5400
1.5290
1.5253
1.5109
1.4967
1.4827
1.4690
Determine the following values for a saturated aqueous NaOH solution at 20 °C to the indicated
SW
60°F
(99
Transcribed Image Text:Electroly
Concentr
Chapter
Partial Pr
G henrys la
/index.html
50
1.5400
1.5290
1.5253
1.5109
1.4967
1.4827
1.4690
Determine the following values for a saturated aqueous NaOH solution at 20 °C to the indicated
number of decimal places (i.e. "d.p."). Enter the appropriate answers into Canvas.
Note: Avoid aggressive rounding. Some of the numbers you calculate early will be used later. Multi-
step calculations only get rounded at the very end.
Question Name
Unit d.p.
Value
1
msolu
g
msolv
g
3
msoln
g
4
mass fraction
unitless
2
mass %
dsoln
g mL-1
6
3
Vsoln
3
8
g/100g
g/100g
9.
mass concentration
gL-1
2
10
molarity
mol L-1
11
molality
mol kg-1
12
mole fraction
unitless
2
13
mole %
14
m/v%
unitless
15
ppm (by mass)
ppm
16
ppm (by volume)
ppm
SW
60°F
99+
%23
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