Density of aqueous solutions of inorganic sodium salts

Changes in density of aqueous solutions with changes in concentration at 20°C. Density of inorganic sodium salts in water is plotted as function of wt%, mol/kg water and mol/l solution.

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Be aware of the concentration units in the figures:

wt%: Mass of solute/total mass of solution*100%

mol/kg: Molality = moles of solute/kg of water

mol/liter: Molarity = moles of solute/liter of solution

Values are tabulated below the figures.

Density of aqueous solutions of sodium salts

Density of aqueous solutions at 20°C, given as g/cm³:

Mass%	Sodium acetate	Sodium bromide	Sodium carbonate	Sodium chloride	Sodium citrate dihydrate	Sodium dihydrogen phosphate	Sodium hydrogen carbonate	Sodium hydrogen phosphate	Sodium hydroxyde	Sodium nitrate	Sodium phosphate	Sodium sulfate	Sodium thiosulfate
1	1.0034	1.006	1.0086	1.0053	1.0049	1.0056	1.0054	1.0082	1.0095	1.005	1.01	1.0071	1.0065
5	1.0234	1.038	1.0502	1.034	1.0331	1.0358	1.0337	1.048	1.0538	1.0322	1.0579	1.0436	1.0399
10	1.0495	1.0803	1.1029	1.0707	1.0708	1.0747			1.1089	1.0674		1.0905	1.0827
20	1.1050	1.1745		1.1478	1.1492	1.1576			1.2192	1.1429		1.1907	1.174
30	1.1602	1.2842				1.2488			1.3277	1.2256			1.2739
40		1.4138				1.3493			1.4299	1.3175			1.3827
Density at 20°C, given as g/cm3

Conversion of the concentration from mass% to mol/kg (moles of solute/kg of water = molality):

Mass%	Sodium acetate	Sodium bromide	Sodium carbonate	Sodium chloride	Sodium citrate dihydrate	Sodium dihydrogen phosphate	Sodium hydrogen carbonate	Sodium hydrogen phosphate	Sodium hydroxyde	Sodium nitrate	Sodium phosphate	Sodium sulfate	Sodium thiosulfate
1	0.123	0.098	0.095	0.173	0.039	0.084	0.12	0.071	0.253	0.119	0.062	0.071	0.064
5	0.642	0.512	0.497	0.901	0.204	0.439	0.627	0.371	1.316	0.619	0.321	0.371	0.333
10	1.354	1.08	1.048	1.901	0.431	0.926			2.778	1.307		0.782	0.703
20	3.047	2.43		4.278	0.969	2.084			6.25	2.941		1.76	1.581
30	5.224	4.165				3.572			10.715	5.042			2.711
40		6.479				5.557			16.668	7.844			4.216
Molality at 20°C, given as mol/kg water

Conversion of the concentration from mass% to mol/liter (moles of solute/liter of solution = molarity):

Mass%	Sodium acetate	Sodium bromide	Sodium carbonate	Sodium chloride	Sodium citrate dihydrate	Sodium dihydrogen phosphate	Sodium hydrogen carbonate	Sodium hydrogen phosphate	Sodium hydroxyde	Sodium nitrate	Sodium phosphate	Sodium sulfate	Sodium thiosulfate
1	0.122	0.098	0.095	0.172	0.039	0.084	0.12	0.071	0.252	0.118	0.062	0.071	0.064
5	0.624	0.504	0.495	0.885	0.2	0.432	0.615	0.369	1.317	0.607	0.323	0.367	0.329
10	1.279	1.05	1.041	1.832	0.415	0.896			2.772	1.256		0.768	0.685
20	2.694	2.283		3.928	0.891	1.93			6.096	2.6989		1.677	1.485
30	4.243	3.744				3.123			9.958	4.326			2.417
40		5.496				4.499			14.3	6.2			3.48
Molarity at 20°C, given as mol/l solution

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