Thermophysical, Volumetric, and Excess Properties of Aqueous Solutions of 1-Hexyl-3-methyl Imidazolium Bromide at 298.15 K and 0.1 MPa

Table 3

Experimental data for refractive index, water activity, and vapour pressure of aqueous solution of [HMIm]Br.

Conc.	Refractive index	Water activity	Vapour pressure
𝑚	𝑛𝐷^25	𝑎𝑤	kPa
0	1.332428	1.000	3.1686
0.0005	1.332456	0.999	3.1654
0.0015	1.332483	0.998	3.1623
0.00158	1.332487	0.998	3.1623
0.0028	1.332528	0.997	3.1591
0.0034	1.332553	0.996	3.1559
0.0043	1.332593	0.996	3.1559
0.0054	1.332638	0.995	3.1528
0.0079	1.332737	0.994	3.1496
0.0082	1.332752	0.994	3.1496
0.0101	1.332832	0.993	3.1464
0.0155	1.333033	0.991	3.1401
0.0231	1.333308	0.990	3.1369
0.0351	1.333775	0.987	3.1274
0.0434	1.334107	0.986	3.1242