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Density of sodium hydroxide, NaOH(aq)

Table 1. Estimated values of absolute density (g/cm3) of aqueous sodium hydroxide solutions {NaOH + H2O) as function of electrolyte molality m and temperature T (at pressure p = 1 bar). Values in the table are consistent with the density of pure water calculated with the IAPWS-95 equation of state.

ρ /g·cm−3
m /mol·kg(H2O)−1 T = 10.0 °C T = 25.0 °C T = 40.0 °C T = 55.0 °C T = 70.0 °C T = 85.0 °C
0.1 1.00437 1.00149 0.99654 0.98996 0.98200 0.97282
0.2 1.00893 1.00584 1.00078 0.99414 0.98615 0.97696
0.3 1.01342 1.01014 1.00498 0.99827 0.99025 0.98106
0.4 1.01784 1.01440 1.00912 1.00235 0.99430 0.98511
0.5 1.02222 1.01860 1.01322 1.00639 0.99832 0.98913
0.6 1.02654 1.02277 1.01729 1.01038 1.00230 0.99312
0.7 1.03082 1.02691 1.02132 1.01437 1.00624 0.99708
0.8 1.03505 1.03101 1.02532 1.01831 1.01016 1.00100
0.9 1.03925 1.03507 1.02929 1.02222 1.01405 1.00490
1.0 1.04340 1.03911 1.03323 1.02610 1.01790 1.00878
1.2 1.05161 1.04711 1.04103 1.03377 1.02553 1.01644
1.4 1.05968 1.05495 1.04871 1.04134 1.03306 1.02400
1.6 1.06762 1.06270 1.05629 1.04880 1.04048 1.03146
1.8 1.07544 1.07034 1.06376 1.05617 1.04780 1.03882
2.0 1.08315 1.07787 1.07114 1.06343 1.05503 1.04609
2.5 1.10191 1.09626 1.08915 1.08120 1.07270 1.06383
3.0 1.12001 1.11402 1.10659 1.09840 1.08980 1.08098
3.5 1.13748 1.13118 1.12347 1.11508 1.10637 1.09756
4.0 1.15437 1.14776 1.13980 1.13124 1.12243 1.11357
4.5 1.17070 1.16378 1.15562 1.14691 1.13799 1.12904
5.0 1.18652 1.17925 1.17093 1.16212 1.15308 1.14397
5.5 1.20186 1.19421 1.18576 1.17687 1.16771 1.15837
6.0 1.21677 1.20866 1.20013 1.19121 1.18192 1.17227

Questions and answers based on this table

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