2015年9月27日星期日

Na2WO4 Refractive Indices

The densities and refractive indices of solutions of various concentrations have been determined as follows:

Grams Na2WO4 in 100 Grams Solution.
Density, d20°
Refractive Index, nD20°
2.21
1.0184
1.33586
10.08
1.0949
1.34516
16.56
1.1667
1.35376
20.59
1.2148
1.35933
25.46
1.2789
1.36648
32.68
1.3854
1.37934
38.43
1.4828
1.38890

The equivalent conductivities of solutions containing ½Na2WO4 in v litres at 25° C. are as follows:

v =
32
64
128
256
512
1024
Λ =
95.9
101.8
105.4
110.3
112.9
116.4


The vapour pressures of solutions have been determined.


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