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Water properties
Water Density (kg/m
3 ) at Different Temperatures (°C)
Temperature
Density
0
999.8395
4
999.9720 (density maximum)
10
999.7026
15
999.1026
20
998.2071
22
997.7735
25
997.0479
30
995.6502
40
992.2
60
983.2
80
971.8
100
958.4
Water Vapor Pressure at Different Temperatures (°C)
Temperature
Vapor Pressure (torr)
Vapor Pressure (Pa)
0
4.6
613.2812
4
6.1
813.2642
10
9.2
1226.562
15
12.8
1706.522
20
17.5
2333.135
22
19.8
2639.776
25
23.8
3173.064
30
31.8
4239.64
35
42.2
5626.188
40
55.3
7372.707
45
71.9
9585.852
50
92.5
12332.29
55
118.0
15732
60
149.4
19918.31
65
187.5
24997.88
70
233.7
31157.35
75
289.1
38543.39
80
355.1
47342.64
85
433.6
57808.42
90
525.8
70100.71
95
633.9
84512.82
100
760.0
101324.7
Water K
w and pK
w at Different Temperatures (°C)
Temperature
K
w 10
–14
pK
w
0
0.112
14.95
5
0.182
14.74
10
0.288
14.54
15
0.465
14.33
20
0.671
14.17
25
0.991
14.00
30
1.432
13.84
35
2.042
13.69
40
2.851
13.55
45
3.917
13.41
50
5.297
13.28
55
7.080
13.15
60
9.311
13.03
75
19.95
12.70
100
56.23
12.25
Specific Heat Capacity for Water
C°(H
2 O(
l )) = 4184 J∙K
−1 ∙kg
−1 = 4.184 J∙g
-1 ∙°C
-1
C°(H
2 O(
s )) = 1864 J∙K
−1 ∙kg
−1
C°(H
2 O(
g )) = 2093 J∙K
−1 ∙kg
−1
Standard Water Melting and Boiling Temperatures and Enthalpies of the Transitions
Temperature (K)
Δ
H (kJ/mol)
melting
273.15
6.088
boiling
373.15
40.656 (44.016 at 298 K)
Water Cryoscopic (Freezing Point Depression) and Ebullioscopic (Boiling Point Elevation) Constants
K
f = 1.86°C∙kg∙mol
−1 (cryoscopic constant)
K
b = 0.51°C∙kg∙mol
−1 (ebullioscopic constant)
Water full-range spectral absorption curve. This curve shows the full-range spectral absorption for water. The
y -axis signifies the absorption in 1/cm. If we divide 1 by this value, we will obtain the length of the path (in cm) after which the intensity of a light beam passing through water decays by a factor of the base of the natural logarithm e (e = 2.718281828).
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Source:
OpenStax, Chemistry. OpenStax CNX. May 20, 2015 Download for free at http://legacy.cnx.org/content/col11760/1.9
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